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Gaikwad SS, Morales JO, Lande NB, Catalán-Figueroa J, Laddha UD, Kshirsagar SJ. Exploring paediatric oral suspension development: Challenges, requirements, and formulation advancements. Int J Pharm 2024; 657:124169. [PMID: 38688428 DOI: 10.1016/j.ijpharm.2024.124169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/02/2024]
Abstract
Oral suspension is the most preferred dosage form for the paediatric population because of the difficulties related to solid medications, such as the swallowing limitations, bitter taste, and poor oral bioavailability, which can cause serious impairment to attain a successful treatment. Given the importance of successful therapies, there is a need for safe and effective commercially-available paediatric oral suspension and their characterization. For the latter, it is important to identify safe excipients and preservatives. The paediatric group is a diverse category which includes infants and teenagers, with major pharmacokinetics and pharmacodynamics differences, mainly because of physiological and behavioral variations. Therefore, finding a single formulation for paediatric population remains a challenge, as well asthe formulation of stable-in-time suspension. In addition, drug's dissolving characteristic and permeation, are the main determinants for oral absorption, which are closely related to drug release kinetics from the pharmaceutical form. In this context, drug release profile is an important and limiting step in oral bioavailability, particularly for BCS class II drugs; thus, it is possible to increase bioavailability and minimize adverse effects by changing the release rate of such drugs. This review covers all the aspects for paediatric oral suspension development, and analyses the considerations for excipients selection as a crucial task for effectively choosing a safe and effective pharmaceutical form and correctly dosing paediatric patients.
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Affiliation(s)
- Sachin S Gaikwad
- Department of Pharmaceutics, Sanjivani College of Pharmaceutical Education and Research, Savitribai Phule Pune University, At Sahajanandnagar, Post-Shinganapur, Tal-Kopargaon, Ahmednagar, Maharashtra 423603, India; Department of Pharmaceutics, MET's Institute of Pharmacy, Affiliated to Savitribai Phule Pune University, Bhujbal Knowledge City, Adgaon, Nashik 422003, India.
| | - Javier O Morales
- Department of Pharmaceutical Sciences and Technology, University of Chile. Santiago 8380494, Chile; Advanced Center for Chronic Diseases (ACCDiS), Chile; Center of New Drugs for Hypertension (CENDHY), Chile
| | - Narayan B Lande
- Department of Pharmaceutics, Sanjivani College of Pharmaceutical Education and Research, Savitribai Phule Pune University, At Sahajanandnagar, Post-Shinganapur, Tal-Kopargaon, Ahmednagar, Maharashtra 423603, India
| | - Johanna Catalán-Figueroa
- Food Science Lab, Institute of Research and Postgraduate Studies, Faculty of Medicine and Health Sciences, Universidad Central de Chile, Santiago 8330546, Chile
| | - Umesh D Laddha
- Department of Pharmaceutics, MET's Institute of Pharmacy, Affiliated to Savitribai Phule Pune University, Bhujbal Knowledge City, Adgaon, Nashik 422003, India; Regeron Inc., Chuncheon-si, Gangwon-do 24232, South Korea
| | - Sanjay J Kshirsagar
- Department of Pharmaceutics, MET's Institute of Pharmacy, Affiliated to Savitribai Phule Pune University, Bhujbal Knowledge City, Adgaon, Nashik 422003, India
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José de Alencar Danda L, Christinne Rocha de Medeiros Schver G, Lamartine Soares Sobrinho J, Lee PI, Felts de La Roca Soares M. Amorphous solid dispersions in high-swelling, low-substituted hydroxypropyl cellulose for enhancing the delivery of poorly soluble drugs. Int J Pharm 2023:123122. [PMID: 37307959 DOI: 10.1016/j.ijpharm.2023.123122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/19/2023] [Accepted: 06/07/2023] [Indexed: 06/14/2023]
Abstract
Amorphous solid dispersions (ASDs) based on water-insoluble hydrophilic polymers can sustain supersaturation in their kinetic solubility profiles (KSPs) compared to soluble carriers. However, in the limit of very high swelling capacity, the achievable extent of drug supersaturation has not been fully examined. This study explores the limiting supersaturation behavior of ASDs of poorly soluble indomethacin (IND) and posaconazole (PCZ) based on a high-swelling excipient, low-substituted hydroxypropyl cellulose (L-HPC). Using IND as a reference, we showed that the rapid initial supersaturation buildup in the KSP of IND ASD can be simulated through sequential IND infusion steps, however at large times the KSP of IND release from ASD appears more sustained than direct IND infusion. This has been attributed to potential trapping of seed crystals generated in the L-HPC gel matrix thus limiting their growth and rate of desupersaturation. Similar result is also expected in PCZ ASD. Furthermore, the current drug loading process for ASD preparation resulted in the agglomeration of L-HPC based ASD particles, producing granules of up to 300-500µm (cf. 20µm individual particle), with distinct kinetic solubility profiles. This feature makes L-HPC particularly suitable as ASD carriers for fine tuning of supersaturation to achieve enhanced bioavailability for poorly soluble drugs.
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Affiliation(s)
| | | | | | - Ping I Lee
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
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Therapeutic Applications of Solid Dispersions for Drugs and New Molecules: In Vitro and In Vivo Activities. Pharmaceutics 2020; 12:pharmaceutics12100933. [PMID: 33007806 PMCID: PMC7601702 DOI: 10.3390/pharmaceutics12100933] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 09/27/2020] [Accepted: 09/27/2020] [Indexed: 12/22/2022] Open
Abstract
This review aims to provide an overview of studies that address the use, in therapeutic applications, of solid dispersions (SDs) with biological activities in vitro and/or in vivo mainly made up of polymeric matrices, as well as to evaluate the bioactive activity of their constituents. This bibliographic survey shows that the development of solid dispersions provides benefits in the physicochemical properties of bioactive compounds, which lead to an increase in their biological potential. However, despite the reports found on solid dispersions, there is still a need for biological assay-based studies, mainly in vivo, to assist in the investigation and to devise new applications. Therefore, studies based on such an approach are of great importance to enhance and extend the use of solid dispersions in the most diverse therapeutic applications.
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How Does the CO 2 in Supercritical State Affect the Properties of Drug-Polymer Systems, Dissolution Performance and Characteristics of Tablets Containing Bicalutamide? MATERIALS 2020; 13:ma13122848. [PMID: 32630453 PMCID: PMC7344854 DOI: 10.3390/ma13122848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 12/19/2022]
Abstract
The increasing demand for novel drug formulations has caused the introduction of the supercritical fluid technology, CO2 in particular, into pharmaceutical technology as a method enabling the reduction of particle size and the formation of inclusion complexes and solid dispersions. In this paper, we describe the application of scCO2 in the preparation of binary systems containing poorly soluble antiandrogenic drug bicalutamide and polymeric excipients, either Macrogol 6000 or Poloxamer®407. The changes in the particle size and morphology were followed using scanning electron microscopy and laser diffraction measurements. Differential scanning calorimetry was applied to assess thermal properties, while X-ray powder diffractometry was used to determine the changes in the crystal structure of the systems. The dissolution of bicalutamide was also considered. Binary solid dispersions were further compressed, and the attributes of tablets were assessed. Tablets were analyzed directly after manufacturing and storage in climate chambers. The obtained results indicate that the use of supercritical CO2 led to the morphological changes of particles and the improvement of drug dissolution. The flowability of blends containing processed binary systems was poor; however, they were successfully compressed into tablets exhibiting enhanced drug release.
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Wani RJ, Sharma P, Zhong HA, Chauhan H. Preparation and Characterization of Griseofulvin Solid Dispersions. Assay Drug Dev Technol 2020; 18:109-118. [DOI: 10.1089/adt.2019.965] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Rajvi J. Wani
- College of Education and Human Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Puneet Sharma
- Glaxosmithkline Consumer Healthcare, Lincoln, Nebraska, USA
| | - H. Andy Zhong
- Department of Chemistry, University of Nebraska Omaha, Omaha, Nebraska, USA
| | - Harsh Chauhan
- School of Pharmacy and Health Professionals, Creighton University, Omaha, Nebraska, USA
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Nanocrystalline Cellulose/Polyvinylpyrrolidone Fibrous Composites Prepared by Electrospinning and Thermal Crosslinking. INT J POLYM SCI 2019. [DOI: 10.1155/2019/7103936] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Nanocellulose/polyvinylpyrrolidone (nCel/PVP) fibrous composite materials containing rod-like nanocrystalline cellulose particles with the lengths varying in the range from 100 to 2000 nm were prepared by using DC electrospinning. The particle size had a strong effect on the precursor viscosity, process efficiency, and resulting fiber diameter. The thermal crosslinking of nCel/PVP composite nanofibers with up to 1.0 : 8.0 nCel/PVP weight ratio resulted in fibrous membranes with textural, air transport, and mass swelling properties varying significantly with the size of cellulose particles. The presence of nCel particles increased the oxidation resistance of PVP during the crosslinking and affected the morphological changes of nCel/PVP fibrous membranes in aqueous solutions. Particles with the smallest size improved the strength of the membrane but decreased its mass swelling capacity, whereas the larger particles led to a more porous and flexible, but mechanically weaker, membrane structure with a higher swelling ability. Thus, by using the nCel particles of different size and shape, the properties of nCel/PVP composite fibrous membranes can be tailored to a specific application.
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Lopes SA, Veiga IG, Bierhalz ACK, Pires ALR, Moraes ÂM. Physicochemical properties and release behavior of indomethacin-loaded polysaccharide membranes. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1525540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ma Y, Yang Y, Xie J, Xu J, Yue P, Yang M. Novel nanocrystal-based solid dispersion with high drug loading, enhanced dissolution, and bioavailability of andrographolide. Int J Nanomedicine 2018; 13:3763-3779. [PMID: 29988798 PMCID: PMC6030943 DOI: 10.2147/ijn.s164228] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective The current study sought to design a quickly dissolving, high drug loading nanocrystal-based solid dispersion (NC-SD) in order to improve the dissolution of poorly soluble drugs. Methods The NC-SD was prepared by means of combination of homogenization and spray-drying. Polymer hydroxypropylmethylcellulose (HPMC) was used as baseline dispersant for NC-SD of the model drug – andrographolide (AG). Three superdisintegrants cohomogenized with HPMC were used as codispersant for AG-NC-SD and compared to common water-soluble dispersants – mannitol and lactose. The dissolution characterization and oral bioavailability of AG-NC-SD were evaluated. Results The AG-NC-SD with the higher concentration of HPMC exhibited fast dissolution due to the enhanced wettability of HPMC. The water-soluble codispersants (mannitol and lactose) did not completely prevent AG-NC from aggregation during spray-drying. To achieve much faster AG release, cohomogenized superdisintegrants at a level of 20% must be used along with 25% HPMC. Compared with water-soluble dispersants like mannitol and lactose, superdisintegrants with high swelling capacity were much more effective dispersants for enhancing fast redispersion/dissolution of AG-NC-SD via a swelling-triggered erosion/disintegration mechanism. Surfactant-free AG-NC-SD with 15% cohomogenized sodium carboxymethyl starch combined with 15% HPMC and 10% lactose enhanced the dissolution further, without comprising drug loading, exhibited a barely compromised dissolution rate compared to precursor NC suspensions (f2>50), and possessed drug loading up to 67.83%±1.26%. The pharmacokinetics results also demonstrated that the AG-NC-SD significantly improved the bioavailability in vivo of AG (P<0.05), compared with to the coarse AG. Conclusion This study illustrates that a quickly dissolving, high drug load, surfactant-free NC-SD can be prepared by using a superdisintegrant as codispersant, and provides a feasible strategy to improve the oral bioavailability of poorly soluble drugs.
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Affiliation(s)
- Yueqin Ma
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, ; .,Department of Medicine and Pharmacy, 94th Hospital of People's Liberation Army, Nanchang, Jiangxi, 330002, China
| | - Yang Yang
- Department of Medicine and Pharmacy, 94th Hospital of People's Liberation Army, Nanchang, Jiangxi, 330002, China
| | - Jin Xie
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, ;
| | - Junnan Xu
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, ;
| | - Pengfei Yue
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, ;
| | - Ming Yang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330004, ;
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Shoormeij Z, Taheri A, Homayouni A. Preparation and physicochemical characterization of meloxicam orally fast disintegration tablet using its solid dispersion. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902017000400176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Enhanced Dissolution of a Porous Carrier–Containing Ternary Amorphous Solid Dispersion System Prepared by a Hot Melt Method. J Pharm Sci 2018; 107:362-371. [DOI: 10.1016/j.xphs.2017.09.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 09/15/2017] [Accepted: 09/22/2017] [Indexed: 11/22/2022]
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Makar RR, Latif R, Hosni EA, El Gazayerly ON. The Impact of Amorphisation and Spheronization Techniques on the Improved in Vitro & in Vivo Performance of Glimepiride Tablets. Adv Pharm Bull 2017; 7:557-567. [PMID: 29399545 PMCID: PMC5788210 DOI: 10.15171/apb.2017.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 09/21/2017] [Accepted: 09/24/2017] [Indexed: 12/01/2022] Open
Abstract
Purpose: Triple solid dispersion adsorbates (TSDads) and spherical agglomerates (SA) present new techniques that extensively enhance dissolution of poorly soluble drugs. The aim of the present study is to hasten the onset of hypoglycemic effect of glimepiride through enhancing its rate of release from tablet formulation prepared from either technique. Methods: Drug release from TSDads or SA tablets with different added excipients was explored. Scanning electron microscopy (SEM) and effect of compression on dissolution were illustrated. Pharmacodynamic evaluation was performed on optimized tablets. Results: TSDads & SA tablets with Cross Povidone showed least disintegration times of 1.48 and 0.5 min. respectively. Kinetics of drug release recorded least half-lives (54.13 and 59.83min for both techniques respectively). Cross section in tablets displayed an organized interconnected matrix under SEM, accounting for the rapid access of dissolution media to the tablet core. Components of tablets filled into capsules showed a similar release profile to that of tablets after compression as indicated by similarity factor. The onset time of maximum reduction in blood glucose in male albino rabbits was hastened to 2h instead of 3h for commercial tablets. Conclusion: After optimization of tablet excipients that interacted differently with respect to their effect on drug release, we could conclude that both amorphisation and spheronization were equally successful in promoting in vitro dissolution enhancement as well as providing a more rapid onset time for drug action in vivo.
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Affiliation(s)
| | - Randa Latif
- Faculty of Pharmacy, Department of Pharmaceutics, Cairo University, Cairo, Egypt
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Wang W, Cui C, Li M, Zhang Z, Lv H. Study of a novel disintegrable oleanolic acid-polyvinylpolypyrrolidone solid dispersion. Drug Dev Ind Pharm 2017; 43:1178-1185. [PMID: 28277846 DOI: 10.1080/03639045.2017.1301950] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Novel solid dispersions of oleanolic acid-polyvinylpolypyrrolidone (OLA-PVPP SDs) were designed and prepared to improve the apparent solubility of drug, as well as to improve the stability, fluidity and compressibility of SDs. Disintegrable OLA-PVPP SDs were then evaluated both in vitro and in vivo. DSC, XRD, IR and SEM analysis proved the formation of OLA-PVPP SD and its amorphous state. The results of fluidity study, moisture absorption test and stability test showed that OLA-PVPP SD with good fluidity and qualified stability was successfully obtained. Meanwhile excellent dissolution rate was achieved for in vitro studies; dissolution test showed that ∼50-75% of OLA was dissolved from SDs within the first 10 min, which is about 10-15 times of free OLA. In vivo study indicated that the formation of solid dispersion could largely improve the absorption of OLA, resulting in a much shorter Tmax (p < .05) and higher Cmax (p < .01) than those of free drug. The AUC0→∞ of OLA-PVPP SDs (1:6) were 155.4 ± 37.24 h·ng/mL compared to the 103.11 ± 26.69 h·ng/mL and 94.92 ± 13.05 h·ng/mL of OLA-PVPP physical mixture (1:6) and free OLA, respectively. These proved PVPP could be a promising carrier of solid dispersions and was industrially feasible alternative carrier in the manufacture of solid dispersions.
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Affiliation(s)
- Weiqin Wang
- a Department of Pharmaceutics , State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing , Jiangsu Province , PR China
| | - Changchang Cui
- a Department of Pharmaceutics , State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing , Jiangsu Province , PR China
| | - Mengying Li
- a Department of Pharmaceutics , State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing , Jiangsu Province , PR China
| | - Zhenhai Zhang
- a Department of Pharmaceutics , State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing , Jiangsu Province , PR China.,b Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine , Nanjing , Jiangsu Province , PR China
| | - Huixia Lv
- a Department of Pharmaceutics , State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing , Jiangsu Province , PR China
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Démuth B, Farkas A, Balogh A, Bartosiewicz K, Kállai-Szabó B, Bertels J, Vigh T, Mensch J, Verreck G, Van Assche I, Marosi G, Nagy ZK. Lubricant-Induced Crystallization of Itraconazole From Tablets Made of Electrospun Amorphous Solid Dispersion. J Pharm Sci 2016; 105:2982-2988. [DOI: 10.1016/j.xphs.2016.04.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 04/01/2016] [Accepted: 04/28/2016] [Indexed: 11/26/2022]
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Novel tablet formulation of amorphous indomethacin using wet granulation with a high-speed mixer granulator combined with porous calcium silicate. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2016.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Palanisamy M, James A, Khanam J. Atorvastatin–cyclodextrin systems: Physiochemical and biopharmaceutical evaluation. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Downstream processing of polymer-based amorphous solid dispersions to generate tablet formulations. Int J Pharm 2015; 486:268-86. [DOI: 10.1016/j.ijpharm.2015.03.053] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/25/2015] [Accepted: 03/26/2015] [Indexed: 11/21/2022]
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Ramírez DG, Robles LV. Contrasting the crospovidones functionality as excipients for direct compression. BRAZ J PHARM SCI 2015. [DOI: 10.1590/s1984-82502015000100016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Specific values of technological properties of excipients allow the establishment of numerical parameters to define and compare their functionality. This study investigates the functionality of Polyplasdones XL and XL10. Parameters studied included tablet disintegration profiles, compactibility profiles and powder flow. The results allowed the establishment of quantitative surrogate functionalities of technological performance, such as absolute number, and as a value relative to the known microcrystalline cellulose type 102. Moreover, the establishment of an explicit functionality to improve the technological performance of two diluents and a model drug was investigated, as was setting up of these functionalities, as quantitative values, to determine the input variables of each material and its probable functionality in a drug product. Disintegration times of pure Polyplasdone XL and its admixtures were around half that of Polyplasdone XL10. The improvement in tablet compactibility was 25-50% greater for Polyplasdone XL10 than Polyplasdone XL. Crospovidones proportions of up to 10% have little effect on the flow properties of other powders, although pure Polyplasdone XL10 and its admixtures display compressibility indexes about 20% greater than Polyplasdone XL. The observed results are in line with a smaller particle size of Polyplasdone XL10 compared to Polyplasdone XL.
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Development of topical gel containing aceclofenac-crospovidone solid dispersion by “Quality by Design (QbD)” approach. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2014.01.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Development of a rebamipide solid dispersion system with improved dissolution and oral bioavailability. Arch Pharm Res 2014; 38:522-33. [DOI: 10.1007/s12272-014-0399-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 04/07/2014] [Indexed: 11/26/2022]
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20
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Improved oral delivery of clonazepam through liquisolid powder compact formulations: In-vitro and ex-vivo characterization. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.02.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sun DD, Lee PI. Crosslinked hydrogels-a promising class of insoluble solid molecular dispersion carriers for enhancing the delivery of poorly soluble drugs. Acta Pharm Sin B 2014; 4:26-36. [PMID: 26579361 PMCID: PMC4590291 DOI: 10.1016/j.apsb.2013.12.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 01/15/2023] Open
Abstract
Water-insoluble materials containing amorphous solid dispersions (ASD) are an emerging category of drug carriers which can effectively improve dissolution kinetics and kinetic solubility of poorly soluble drugs. ASDs based on water-insoluble crosslinked hydrogels have unique features in contrast to those based on conventional water-soluble and water-insoluble carriers. For example, solid molecular dispersions of poorly soluble drugs in poly(2-hydroxyethyl methacrylate) (PHEMA) can maintain a high level of supersaturation over a prolonged period of time via a feedback-controlled diffusion mechanism thus avoiding the initial surge of supersaturation followed by a sharp decline in drug concentration typically encountered with ASDs based on water-soluble polymers. The creation of both immediate- and controlled-release ASD dosage forms is also achievable with the PHEMA based hydrogels. So far, ASD systems based on glassy PHEMA have been shown to be very effective in retarding precipitation of amorphous drugs in the solid state to achieve a robust physical stability. This review summarizes recent research efforts in investigating the potential of developing crosslinked PHEMA hydrogels as a promising alternative to conventional water-soluble ASD carriers, and a related finding that the rate of supersaturation generation does affect the kinetic solubility profiles implications to hydrogel based ASDs.
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Affiliation(s)
| | - Ping I. Lee
- Corresponding author. Tel.: +1 416 946 0606; fax: +1 416 978 8511.
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Saripella KK, Mallipeddi R, Neau SH. Crospovidone Interactions with Water. I. Calorimetric Study of the Effect of Polyplasdone Particle Size on Its Uptake and Distribution of Water. J Pharm Sci 2014; 103:669-75. [DOI: 10.1002/jps.23846] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 11/29/2013] [Accepted: 12/16/2013] [Indexed: 11/08/2022]
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Methods of amorphization and investigation of the amorphous state. ACTA PHARMACEUTICA 2013; 63:305-34. [PMID: 24152894 DOI: 10.2478/acph-2013-0026] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The amorphous form of pharmaceutical materials represents the most energetic solid state of a material. It provides advantages in terms of dissolution rate and bioavailability. This review presents the methods of solid- -state amorphization described in literature (supercooling of liquids, milling, lyophilization, spray drying, dehydration of crystalline hydrates), with the emphasis on milling. Furthermore, we describe how amorphous state of pharmaceuticals differ depending on the method of preparation and how these differences can be screened by a variety of spectroscopic (X-ray powder diffraction, solid state nuclear magnetic resonance, atomic pairwise distribution, infrared spectroscopy, terahertz spectroscopy) and calorimetry methods.
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Shibata Y, Fujii M, Suzuki A, Koizumi N, Kanada K, Yamada M, Watanabe Y. Effect of storage conditions on the recrystallization of drugs in solid dispersions with crospovidone. Pharm Dev Technol 2013; 19:468-74. [DOI: 10.3109/10837450.2013.795168] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Razali S, Wong TW. Design of superdisintegrant- and effervescent agent-less dispersible fast-release melt pellets. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2012.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Palermo RN, Short SM, Anderson CA, Tian H, Drennen JK. Determination of Figures of Merit for Near-Infrared, Raman and Powder X-ray Diffraction by Net Analyte Signal Analysis for a Compacted Amorphous Dispersion with Spiked Crystallinity. J Pharm Innov 2012. [DOI: 10.1007/s12247-012-9127-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sun DD, Ju TCR, Lee PI. Enhanced kinetic solubility profiles of indomethacin amorphous solid dispersions in poly(2-hydroxyethyl methacrylate) hydrogels. Eur J Pharm Biopharm 2012; 81:149-58. [DOI: 10.1016/j.ejpb.2011.12.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Revised: 12/23/2011] [Accepted: 12/26/2011] [Indexed: 11/28/2022]
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Review: Use of Thermal, Diffraction, and Vibrational Analytical Methods to Determine Mechanisms of Solid Dispersion Stability. J Pharm Innov 2012. [DOI: 10.1007/s12247-012-9121-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dave RH, Patel AD, Donahue E, Patel HH. To evaluate the effect of addition of an anionic surfactant on solid dispersion using model drug indomethacin. Drug Dev Ind Pharm 2011; 38:930-9. [DOI: 10.3109/03639045.2011.633264] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pahovnik D, Reven S, Grdadolnik J, Borštnar R, Mavri J, Žagar E. Determination of the interaction between glimepiride and hyperbranched polymers in solid dispersions. J Pharm Sci 2011; 100:4700-9. [DOI: 10.1002/jps.22662] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 05/19/2011] [Accepted: 05/20/2011] [Indexed: 11/07/2022]
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Hentzschel CM, Alnaief M, Smirnova I, Sakmann A, Leopold CS. Enhancement of griseofulvin release from liquisolid compacts. Eur J Pharm Biopharm 2011; 80:130-5. [PMID: 21846502 DOI: 10.1016/j.ejpb.2011.08.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 07/30/2011] [Accepted: 08/01/2011] [Indexed: 10/17/2022]
Abstract
The potential of hydrophilic aerogel formulations and liquisolid systems to improve the release of poorly soluble drugs was investigated using griseofulvin as model drug. The in vitro release rates of this drug formulated as directly compressed tablets containing crystalline griseofulvin were compared to aerogel tablets with the drug adsorbed onto hydrophilic silica aerogel and to liquisolid compacts containing the drug dissolved or suspended in PEG 300. Furthermore, the commonly used carrier and coating materials in liquisolid systems Avicel® and Aerosil® were replaced by Neusilin®, an amorphous magnesium aluminometasilicate with an extremely high specific surface area of 339 m²/g to improve the liquisolid approach. Both the liquisolid compacts containing the drug dissolved in PEG 300 and the aerogel tablets showed a considerably faster drug release than the directly compressed tablets. With liquisolid compacts containing the drug suspended in PEG 300, the release rate increased with rising fraction of dissolved drug in the liquid portion. It could be shown that Neusilin® with its sevenfold higher liquid adsorption capacity than the commonly used Avicel® and Aerosil® allows the production of liquisolid formulations with lower tablet weights.
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Affiliation(s)
- C M Hentzschel
- Institute of Pharmacy, Department of Pharmaceutical Technology, University of Hamburg, Hamburg, Germany
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Reven S, Homar M, Peternel L, Kristl J, Žagar E. Preparation and Characterization of Tablet Formulation based on Solid Dispersion of Glimepiride and Poly(ester amide) Hyperbranched Polymer. Pharm Dev Technol 2011; 18:323-32. [DOI: 10.3109/10837450.2011.598164] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Preparation and characterization of pH-independent sustained release tablet containing solid dispersion granules of a poorly water-soluble drug. Int J Pharm 2011; 415:83-8. [DOI: 10.1016/j.ijpharm.2011.05.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 05/19/2011] [Indexed: 11/19/2022]
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Mesnukul A, Yodkhum K, Mahadlek J, Phaechamud T. Characterization of indomethacin release from polyethylene glycol tablet fabricated with mold technique. Indian J Pharm Sci 2011; 72:92-100. [PMID: 20582196 PMCID: PMC2883233 DOI: 10.4103/0250-474x.62255] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2009] [Revised: 10/31/2009] [Accepted: 01/01/2010] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study was to use polyethylene glycol as a carrier to improve the solubility of an aqueous insoluble drug by melting and molding method. The release of dissolved drug was designed to be subsequently sustained with an addition of xanthan gum. The release of indomethacin from the developed system into phosphate buffer pH 6.2 was conducted using the dissolution apparatus. This carrier system could effectively enhance the solubility of indomethacin and an addition of xanthan gum could sustain the drug release. Eudragit L100 film coating could protect the carrier not to be disturbed with HCl buffer pH 1.2 and could dissolve in phosphate buffer pH 6.2, therefore, the drug release from coated tablet was initially very low but subsequently gradually released and prolonged in phosphate buffer pH 6.2. Differential scanning calorimetry study indicated the amorphous state of drug in polyethylene glycol carrier. Scanning electron microscopy photomicrograph indicated the drug diffusion outward through the porous network of matrix tablets into the dissolution fluid and curve fitting signified that the drug release kinetic was Fickian diffusion.
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Affiliation(s)
- A Mesnukul
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
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Nakanishi S, Fujii M, Sugamura Y, Suzuki A, Shibata Y, Koizumi N, Watanabe Y. Evaluation of the physicochemical characteristics of crospovidone that influence solid dispersion preparation. Int J Pharm 2011; 413:119-25. [DOI: 10.1016/j.ijpharm.2011.04.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2010] [Revised: 03/26/2011] [Accepted: 04/15/2011] [Indexed: 11/16/2022]
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Investigation of triacetin effect on indomethacin release from poly(methyl methacrylate) microspheres: Evaluation of interactions using FT-IR and NMR spectroscopies. Int J Pharm 2011; 404:102-9. [DOI: 10.1016/j.ijpharm.2010.11.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 11/08/2010] [Accepted: 11/09/2010] [Indexed: 11/24/2022]
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Nokhodchi A, Hentzschel CM, Leopold CS. Drug release from liquisolid systems: speed it up, slow it down. Expert Opin Drug Deliv 2011; 8:191-205. [PMID: 21222556 DOI: 10.1517/17425247.2011.548801] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Today, the properties of many new chemical entities have shifted towards higher molecular weights and this in turn increases the lipophilicity hence decreasing aqueous solubility. The low solubility of drugs usually has in vivo consequences such as low bioavailability, increased chance of food effect and incomplete release from the dosage form. AREAS COVERED The present review discusses the advantages of the liquisolid technology in formulation design of poorly water soluble drugs for dissolution enhancement and highly water soluble drugs for slow release pattern. EXPERT OPINION With the advent of high throughput screening and combinatorial chemistry, it has been shown that most of the new chemical entities have a high lipophilicity and poor aqueous solubility, hence poor bioavailability. In order to improve the bioavailability, the release rate of these drugs should be enhanced. Although there are multiple technologies to tackle this issue, they are not cost effective due to the involvement of sophisticated machinery, advanced preparation techniques and complicated technology. As the liquisolid technology uses a similar production process as the conventional tablets, this technology to improve the release rate of poorly water soluble drugs will be cost effective. This technology also has the capability to slow down drug release and allows preparing sustained release tablets with zero order drug release pattern. The excipients required for this technology are conventional and commonly available in the market. The technology is in the early stages of its development with extensive research currently focused on. It is envisaged that the liquisolid compacts could play a major role in the next generation of tablets.
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Affiliation(s)
- Ali Nokhodchi
- Universities of Kent and Greenwich, Medway School of Pharmacy, Chemistry and Drug Delivery Group, Chatham Maritime, Kent, UK.
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Sugamura Y, Fujii M, Nakanishi S, Suzuki A, Shibata Y, Koizumi N, Watanabe Y. Effect of Particle Size of Drug on Conversion of Crystals to an Amorphous State in a Solid Dispersion with Crospovidone. Chem Pharm Bull (Tokyo) 2011; 59:235-8. [DOI: 10.1248/cpb.59.235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yuka Sugamura
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
| | - Makiko Fujii
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
- High Technology Research Center, Showa Pharmaceutical University
| | - Sayaka Nakanishi
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
| | - Ayako Suzuki
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
| | - Yusuke Shibata
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
- Pharmaceutical Research Laboratories, Kissei Pharmceutical Co., Ltd
| | - Naoya Koizumi
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
| | - Yoshiteru Watanabe
- Department of Pharmaceutics and Biopharmaceutics, Showa Pharmaceutical University
- High Technology Research Center, Showa Pharmaceutical University
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39
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Ahmed TA, Ibrahim HM, Ibrahim F, Samy AM, Fetoh E, Nutan MTH. In vitro release, rheological, and stability studies of mefenamic acid coprecipitates in topical formulations. Pharm Dev Technol 2010; 16:497-510. [PMID: 20550465 DOI: 10.3109/10837450.2010.495394] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A suitable topical formulation of mefenamic acid was developed in order to eliminate the gastrointestinal disorders associated with its oral administration. Drug coprecipitates prepared with different polymers at various drug-to-polymer ratios improved drug solubility and dissolution compared to pure drug and physical mixtures. PVP polymers (ratio 1:4) produced the best results. Aqueous ionic cream, ointments of absorption and water soluble bases and gels of methylcellulose, carboxymethylcellulose sodium, HPMC, Carbopol® 934 and 940, and Pluronic® F127 bases containing 1-10% drug as coprecipitates of PVP polymers (1:4) were prepared. The highest drug release was achieved at 1% drug concentration from water soluble base and methylcellulose among cream/ointment and gel bases, respectively. Gels, in general yielded better release than creams/ointments. All tested medicated creams/ointments exhibited plastic flow while all gels conformed to pseudoplasticity. Most of them showed thixotropy, a desired property of topical preparations. Stability studies revealed that HPMC and methylcellulose had the smallest changes in drug content, viscosity, and pH among the formulations. Considering drug release, rheological properties, and stability, methylcellulose gel containing 1% drug as coprecipitates of PVP K90 was the best among the studied formulations, was promising for improving bioavailability of mefenamic acid and can be used in future studies.
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Affiliation(s)
- Tarek A Ahmed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
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Liu H, Wang P, Zhang X, Shen F, Gogos CG. Effects of extrusion process parameters on the dissolution behavior of indomethacin in Eudragit® E PO solid dispersions. Int J Pharm 2010; 383:161-9. [DOI: 10.1016/j.ijpharm.2009.09.003] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Revised: 08/28/2009] [Accepted: 09/02/2009] [Indexed: 11/29/2022]
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41
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Sinha S, Baboota S, Ali M, Kumar A, Ali J. Solid Dispersion: An Alternative Technique for Bioavailability Enhancement of Poorly Soluble Drugs. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690903120136] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Al-Obaidi H, Buckton G. Evaluation of griseofulvin binary and ternary solid dispersions with HPMCAS. AAPS PharmSciTech 2009; 10:1172-7. [PMID: 19842041 DOI: 10.1208/s12249-009-9319-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Accepted: 09/18/2009] [Indexed: 11/30/2022] Open
Abstract
The stability and dissolution properties of griseofulvin binary and ternary solid dispersions were evaluated. Solid dispersions of griseofulvin and hydroxypropyl methylcellulose acetate succinate (HPMCAS) were prepared using the spray drying method. A third polymer, poly[N-(2-hydroxypropyl)methacrylate] (PHPMA), was incorporated to investigate its effect on the interaction of griseofulvin with HPMCAS. In this case, HPMCAS can form H bonds with griseofulvin directly; the addition of PHPMA to the solid dispersion may enhance the stability of the amorphous griseofulvin due to greater interaction with griseofulvin. The X-ray powder diffraction results showed that griseofulvin (binary and ternary solid dispersions) remained amorphous for more than 19 months stored at 85% RH compared with the spray-dried griseofulvin which crystallized totally within 24 h at ambient conditions. The Fourier transform infrared scan showed that griseofulvin carbonyl group formed hydrogen bonds with the hydroxyl group in the HPMCAS, which could explain the extended stability of the drug. Further broadening in the peak could be seen when PHPMA was added to the solid dispersion, which indicates stronger interaction. The glass transition temperatures increased in the ternary solid dispersions regardless of HPMCAS grade. The dissolution rate of the drug in the solid dispersion (both binary and ternary) has significantly increased when compared with the dissolution profile of the spray-dried griseofulvin. These results reveal significant stability of the amorphous form due to the hydrogen bond formation with the polymer. The addition of the third polymer improved the stability but had a minor impact on dissolution.
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Aceves-Hernandez JM, Nicolás-Vázquez I, Aceves FJ, Hinojosa-Torres J, Paz M, Castaño VM. Indomethacin polymorphs: Experimental and conformational analysis. J Pharm Sci 2009; 98:2448-63. [PMID: 19199282 DOI: 10.1002/jps.21626] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Thermal analysis of indomethacin alpha and gamma polymorphs presents a temperature transition at 429.2 and 435.8 K, respectively, although with X-ray diffraction or near infra-red spectroscopy phase transformations were not registered. DSC method for the indomethacin amorphous solid shows an endothermic event; however, the conformational analysis at higher temperature shows a rotational change which may explain such endothermic peak. By heating the gamma polymorph at 483 K (210 degrees C) for 30 min and then quenching into liquid nitrogen the amorphous solid was obtained. The alpha form shows the highest intrinsic dissolution rate, while the lowest rate was for the amorphous indomethacin. Theoretical calculations (ab initio, Hartree-Fock and density functional theory, DFT) indicate that the double interaction is responsible for the observed difference in solubility.
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Affiliation(s)
- J M Aceves-Hernandez
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Av. 1 de Mayo s/n, Col. Sta. Ma. Las Torres, Cuautitlán Izcalli, Estado de México, México 54740, Mexico
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44
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Vadher AH, Parikh JR, Parikh RH, Solanki AB. Preparation and characterization of co-grinded mixtures of aceclofenac and neusilin US2 for dissolution enhancement of aceclofenac. AAPS PharmSciTech 2009; 10:606-14. [PMID: 19444620 PMCID: PMC2690784 DOI: 10.1208/s12249-009-9221-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Accepted: 02/13/2009] [Indexed: 11/30/2022] Open
Abstract
The present study was carried out with a view to enhance the dissolution of poorly water-soluble BCS-class II drug aceclofenac by co-grinding with novel porous carrier Neusilin US(2.) (amorphous microporous granules of magnesium aluminosilicate, Fuji Chemical Industry, Toyama, Japan). Neusilin US(2) has been used as an important pharmaceutical excipient for solubility enhancement. Co-grinding of aceclofenac with Neusilin US(2) in a ratio of 1:5 was carried out by ball milling for 20 h. Samples of co-ground mixtures were withdrawn at the end of every 5 h. and characterized for X-ray powder diffraction, differential scanning calorimetry, and Fourier-transform infrared spectroscopy. The analysis revealed the conversion of crystalline aceclofenac to its amorphous form upon milling with Neusilin US(2). Further, in vitro dissolution rate of aceclofenac from co-ground mixture was significantly higher compared to pure aceclofenac. The accelerated stability study of co-ground mixture was carried out at 40 degrees C/75%RH for 4 weeks, and it showed that there was no reversion from amorphous to crystalline form. Thus, it is advantageous to use a porous carrier like Neusilin US(2) in improvement of dissolution of poorly soluble drugs.
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Affiliation(s)
- Ambarish H. Vadher
- />A. R. College of Pharmacy and G. H. Patel Institute of Pharmacy, Vallabh Vidyanagar, 388 120 India
- />Institute of Science and Technology for Advanced Studies and Research (ISTAR), Valllabh Vidyanagar, 388 120 India
- />Formulation and Development Department, Alembic Research Centre, Alembic road, Vadodara, 390 003 India
| | - Jolly R. Parikh
- />A. R. College of Pharmacy and G. H. Patel Institute of Pharmacy, Vallabh Vidyanagar, 388 120 India
| | - Rajesh H. Parikh
- />Ramanbhai Patel College of Pharmacy, Education Campus, Changa, 482 321 India
| | - Ajay B. Solanki
- />A. R. College of Pharmacy and G. H. Patel Institute of Pharmacy, Vallabh Vidyanagar, 388 120 India
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45
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Shibata Y, Fujii M, Sugamura Y, Nakanishi S, Yamada M, Ouchi K, Watanabe Y. Stability of amorphous indomethacin in a solid dispersion using crospovidone prepared by a twin-screw kneader or extruder and application of aqueous film-coating to solid dispersion tablets. J Drug Deliv Sci Technol 2009. [DOI: 10.1016/s1773-2247(09)50037-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Chen S, Zhu J, Ma F, Fang Q, Li Y. Preparation and Characterization of Solid Dispersions of Dipyridamole with a Carrier “Copolyvidonum Plasdone®S-630”. Drug Dev Ind Pharm 2008; 33:888-99. [PMID: 17729107 DOI: 10.1080/03639040701199209] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Solid dispersions (SDs) of dipyridamole (DIP) with a novel carrier copolyvidonum Plasdone S-630 (CoPVP) were developed by solvent evaporation method. The solid state of SDs of DIP with CoPVP (SDs CoPVP) was characterized by fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and polarizing microscopy, compared with that of SDs of DIP with polyvinylpyrrolidone Plasdone K-29/32 (SDs PVP). FT-IR analysis demonstrated the presence of intermolecular hydrogen bonding between DIP and CoPVP or PVP in SDs. DSC and XRD studies indicated that DIP presented in amorphous state in both SDs CoPVP and SDs PVP at higher weight ratios. The dissolution property of SDs CoPVP was significantly improved in comparison of pure DIP and physical mixtures with CoPVP (PM CoPVP). Both SDs CoPVP and SDs PVP powder showed the favorable flowability. However, SDs CoPVP showed better compressibility than SDs PVP. The lower hydroscopicity of SDs CoPVP could be advantageous to the stability to SDs. This study proves the potential of CoPVP as a carrier in the formulations of SDs for poorly soluble drugs.
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Affiliation(s)
- Shengjun Chen
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, PR China
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47
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Shibata Y, Fujii M, Noda S, Kokudai M, Okada H, Kondoh M, Watanabe Y. Fluidity and Tableting Characteristics of a Powder Solid Dispersion of the Low Melting Drugs Ketoprofen and Ibuprofen with Crospovidone. Drug Dev Ind Pharm 2008; 32:449-56. [PMID: 16638683 DOI: 10.1080/03639040500529127] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A powder solid dispersion system (SD) of ketoprofen (KP) or ibuprofen (IP), which possess low melting points, plus crospovidone (CrosPVP), have good fluidity characteristics and can be used to formulate tablets. Tablets of KP or IP in the SD of adequate hardness within a narrow weight range can be prepared by direct compression. Addition of microcrystalline cellulose (MCC) resulted in greater hardness characteristics and less variation in tablet weight. Forces during the tableting process were measured with a tableting process analyzer (TabAll) equipped with a single-punch for determining capping and sticking properties during the tableting process. Pressure transmission ratio from the upper to the lower punch and die wall force were increased by adding 1% magnesium stearate (MS) to the SD. Ejection force decreased when MS was added to the SD. When tablets of the IP SD were prepared without excipient, scraper pressure (SP) was large, resulting in sticking. However, addition of 1% MS, lowered the SP value and eliminated sticking. Thus, an SD of compounds with a low melting point such as KP or IP is suitable for tablet manufacture by direct compression with the addition of 1% MS.
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Affiliation(s)
- Yusuke Shibata
- Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo, 194-8543, Japan
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48
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Shibata Y, Fujii M, Kokudai M, Noda S, Okada H, Kondoh M, Watanabe Y. Effect of Characteristics of Compounds on Maintenance of an Amorphous State in Solid Dispersion with Crospovidone. J Pharm Sci 2007; 96:1537-47. [PMID: 17136760 DOI: 10.1002/jps.20794] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Solid dispersion (SD) of indomethacin with crospovidone (CrosPVP) shows useful characteristics for preparation of dosage forms. This study aimed to determine the types of drugs that could adopt a stable amorphous form in SD. Twenty compounds with various melting points (70-218 degrees C), molecular weights (135-504) and functional groups (amide, amino, carbonyl, hydroxyl, ketone etc.) were prepared in SD with CrosPVP. The CrosPVP SDs were prepared using a mechanical mixing and heating method. Melting point and molecular weight were found to have no influence on the ability of a compound to maintain an amorphous state in SD. All compounds containing hydrogen-bond-donor functional groups existed in an amorphous state in SD for at least 6 months. Infrared spectra suggested an interaction between the functional groups of these compounds and amide carbonyl group of CrosPVP. Compounds without hydrogen-bond-donor groups could not maintain an amorphous state and underwent recrystallization within 1 month. It was suggested that the presence of a hydrogen-bond-donor functional group in a compound is an important factor affecting the stable formation of SD with CrosPVP, which contains a hydrogen-bond acceptor.
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Affiliation(s)
- Yusuke Shibata
- Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
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Hasegawa S, Furuyama N, Yada S, Hamaura T, Kusai A, Yonemochi E, Terada K. Effect of physical properties of troglitazone crystal on the molecular interaction with PVP during heating. Int J Pharm 2007; 336:82-9. [PMID: 17178201 DOI: 10.1016/j.ijpharm.2006.11.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 10/15/2006] [Accepted: 11/18/2006] [Indexed: 11/20/2022]
Abstract
This study examined the effect of physical properties of troglitazone drug substance on the molecular interaction with polyvinylpyrrolidone K30 (PVP) during preparation by a closed melting method. Milling was conducted using impact and jet mills to change the physical properties of troglitazone, such as particle size, specific surface area, surface free energy and acidic-basic parameters. Solid dispersions (SDs) prepared from milled troglitazone, irrespective of milling method, showed almost 100% dissolution when not less than 7.5% of water was added during heating. SDs prepared from unmilled troglitazone showed almost 100% dissolution when not less than 12.8% of water was added during heating. Physical mixture (PM) containing unmilled troglitazone must be heated above at least 50 degrees C higher than the glass transition temperature (T(g)) of PVP to obtain an SD showing 100% dissolution, while PMs containing milled troglitazone could be heated above only 20 degrees C higher than the T(g) of PVP to obtain an SD showing 100% dissolution. The melting points of troglitazone in PMs containing milled troglitazone, irrespective of milling method, were lower than those in PMs containing unmilled troglitazone. These results indicated that specific interaction could occur more easily during heating between milled troglitazone and PVP during preparation by a closed melting method. In addition, Fourier transform infrared study indicated that hydrogen bonding could occur between the N-H of troglitazone and the C=O of PVP.
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Affiliation(s)
- Susumu Hasegawa
- Pharmaceutical Development Laboratories, Sankyo Co. Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan.
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Rawlinson CF, Williams AC, Timmins P, Grimsey I. Polymer-mediated disruption of drug crystallinity. Int J Pharm 2007; 336:42-8. [PMID: 17157459 DOI: 10.1016/j.ijpharm.2006.11.029] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 09/29/2006] [Accepted: 11/08/2006] [Indexed: 11/24/2022]
Abstract
Ibuprofen (IB), a BCS Class II compound, is a highly crystalline substance with poor solubility properties. Here we report on the disruption of this crystalline structure upon intimate contact with the polymeric carrier cross-linked polyvinylpyrrolidone (PVP-CL) facilitated by low energy simple mixing. Whilst strong molecular interactions between APIs and carriers within delivery systems would be expected on melting or through solvent depositions, this is not the case with less energetic mixing. Simple mixing of the two compounds resulted in a significant decrease in the differential scanning calorimetry (DSC) melting enthalpy for IB, indicating that approximately 30% of the crystalline content was disordered. This structural change was confirmed by broadening and intensity diminution of characteristic IB X-ray powder diffractometry (PXRD) peaks. Unexpectedly, the crystalline content of the drug continued to decrease upon storage under ambient conditions. The molecular environment of the mixture was further investigated using Fourier transform infrared (FT-IR) and Fourier transform Raman (FT-Raman) spectroscopy. These data suggest that the primary interaction between these components of the physical mix is hydrogen bonding, with a secondary mechanism involving electrostatic/hydrophobic interactions through the IB benzene ring. Such interactions and subsequent loss of crystallinity could confer a dissolution rate advantage for IB.
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Affiliation(s)
- Clare F Rawlinson
- Drug Delivery Group, School of Pharmacy, University of Bradford, Richmond Road, Bradford BD7 1DP, UK
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