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Erkoç T, Sevgili LM, Çavuş S. Hydroxypropyl cellulose/Polyvinylpyrrolidone Matrix Tablets Containing Ibuprofen: Infiltration, Erosion and Drug Release Characteristics. ChemistrySelect 2022. [DOI: 10.1002/slct.202202180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tuğba Erkoç
- Istanbul University-Cerrahpaşa Faculty of Engineering Department of Chemical Engineering 34320 Istanbul Turkey
| | - Lutfullah M. Sevgili
- Istanbul University-Cerrahpaşa Faculty of Engineering Department of Chemical Engineering 34320 Istanbul Turkey
| | - Selva Çavuş
- Istanbul University-Cerrahpaşa Faculty of Engineering Department of Chemical Engineering 34320 Istanbul Turkey
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Development of Extended-Release Mini-Tablets Containing Metoprolol Supported by Design of Experiments and Physiologically Based Biopharmaceutics Modeling. Pharmaceutics 2022; 14:pharmaceutics14050892. [PMID: 35631478 PMCID: PMC9146084 DOI: 10.3390/pharmaceutics14050892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 11/17/2022] Open
Abstract
The development of extended-release dosage forms with adequate drug release is a challenge for pharmaceutical companies, mainly when the drug presents high solubility, as in Biopharmaceutics Classification System (BCS) class I. This study aimed to develop extended-release mini-tablets containing metoprolol succinate (MS), while integrating design of experiments (DOE) and physiologically based biopharmaceutics modeling (PBBM), to predict its absorption and to run virtual bioequivalence (VBE) studies in both fasted and fed states. Core mini-tablet formulations (F1, F2, and F3) were prepared by direct compression and coated using nine coating formulations planned using DOE, while varying the percentages of the controlled-release and the pore-forming polymers. The coated mini-tablets were submitted to a dissolution test; additional formulations were prepared that were optimized by simulating the dissolution profiles, and the best one was submitted to VBE studies using GastroPlus® software. An optimized formulation (FO) containing a mixture of immediate and extended-release mini-tablets showed to be bioequivalent to the reference drug product containing MS when running VBE studies in both fasted and fed states. The integration of DOE and PBBM showed to be an interesting approach in the development of extended-release mini-tablet formulation containing MS, and can be used to rationalize the development of dosage forms.
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Hejduk A, Lulek J. Dispensing of minitablets - Has the problem been resolved? Int J Pharm 2022; 619:121666. [PMID: 35339634 DOI: 10.1016/j.ijpharm.2022.121666] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/19/2022] [Accepted: 03/11/2022] [Indexed: 01/09/2023]
Abstract
Recently, minitablets have been given extensive coverage in literature, as they are perfectly matched to the current therapy individualization trend. Within this scope, special attention is paid to minitablets that enable convenient drug intake for patients with swallowing problem. However, the packaging system, dispensing the necessary amount of drug units and safe administration still remain unsolved problems or are partially overlooked. Although there are many different approaches towards dosing tablets, only a few seem to be tailored to particularly small tablets. Moreover, none of these approaches meets all the user's expectations. This paper comprehensively elaborates and critically discusses the available dosing options like sachets, blisters, home electronic dispensing systems and minitablets manual dispensers. Additional tests have been also conducted to simulate the handling and dosing procedure with 2 mm diameter placebo minitablets. Despite many advantageous inventions, it has been revealed that further efforts are necessary to identify the optimal design that would allow to eliminate the shaking procedure, adjust cavities diameter or provide better protection against humidity. Nevertheless, the current trend may lead to individual therapy becoming more convenient, safe and reliable, especially in pediatric and geriatric patients.
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Affiliation(s)
- Arkadiusz Hejduk
- Chair and Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznan, Poland; Przedsiębiorstwo Farmaceutyczne LEK-AM Sp. z o.o., 14A Ostrzykowizna Street, 05-170 Zakroczym, Poland.
| | - Janina Lulek
- Chair and Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznan, Poland.
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Mašková E, Kubová K, Raimi-Abraham BT, Vllasaliu D, Vohlídalová E, Turánek J, Mašek J. Hypromellose - A traditional pharmaceutical excipient with modern applications in oral and oromucosal drug delivery. J Control Release 2020; 324:695-727. [PMID: 32479845 DOI: 10.1016/j.jconrel.2020.05.045] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 02/07/2023]
Abstract
Hydroxypropylmethylcellulose (HPMC), also known as Hypromellose, is a traditional pharmaceutical excipient widely exploited in oral sustained drug release matrix systems. The choice of numerous viscosity grades and molecular weights available from different manufacturers provides a great variability in its physical-chemical properties and is a basis for its broad successful application in pharmaceutical research, development, and manufacturing. The excellent mucoadhesive properties of HPMC predetermine its use in oromucosal delivery systems including mucoadhesive tablets and films. HPMC also possesses desirable properties for formulating amorphous solid dispersions increasing the oral bioavailability of poorly soluble drugs. Printability and electrospinnability of HPMC are promising features for its application in 3D printed drug products and nanofiber-based drug delivery systems. Nanoparticle-based formulations are extensively explored as antigen and protein carriers for the formulation of oral vaccines, and oral delivery of biologicals including insulin, respectively. HPMC, being a traditional pharmaceutical excipient, has an irreplaceable role in the development of new pharmaceutical technologies, and new drug products leading to continuous manufacturing processes, and personalized medicine. This review firstly provides information on the physical-chemical properties of HPMC and a comprehensive overview of its application in traditional oral drug formulations. Secondly, this review focuses on the application of HPMC in modern pharmaceutical technologies including spray drying, hot-melt extrusion, 3D printing, nanoprecipitation and electrospinning leading to the formulation of printlets, nanoparticle-, microparticle-, and nanofiber-based delivery systems for oral and oromucosal application. Hypromellose is an excellent excipient for formulation of classical dosage forms and advanced drug delivery systems. New methods of hypromellose processing include spray draying, hot-melt extrusion, 3D printing, and electrospinning.
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Affiliation(s)
- Eliška Mašková
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 70, Brno 621 00, Czech Republic
| | - Kateřina Kubová
- Faculty of Pharmacy, Masaryk University, Brno 625 00, Czech Republic
| | - Bahijja T Raimi-Abraham
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Driton Vllasaliu
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Eva Vohlídalová
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 70, Brno 621 00, Czech Republic
| | - Jaroslav Turánek
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 70, Brno 621 00, Czech Republic.
| | - Josef Mašek
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 70, Brno 621 00, Czech Republic.
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Issa MG, Souza NVD, Duque MD, Ferraz HG. Physical characterization of multiparticulate systems. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902017000400216] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Vemula SK, Venisetty RK, Veerareddy PR. Valsartan floating bioadhesive compression-coated mini-tablets: Formulation and pharmacokinetics. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.05.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Guerra-Ponce WL, Gracia-Vásquez SL, González-Barranco P, Camacho-Mora IA, Gracia-Vásquez YA, Orozco-Beltrán E, Felton LA. In vitro evaluation of sustained released matrix tablets containing ibuprofen: a model poorly water-soluble drug. BRAZ J PHARM SCI 2016. [DOI: 10.1590/s1984-82502016000400020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Kuentz M, Holm R, Elder DP. Methodology of oral formulation selection in the pharmaceutical industry. Eur J Pharm Sci 2016; 87:136-63. [DOI: 10.1016/j.ejps.2015.12.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/24/2015] [Accepted: 12/06/2015] [Indexed: 12/30/2022]
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9
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Design, optimization and evaluation of mesalamine matrix tablet for colon drug delivery system. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2015. [DOI: 10.1007/s40005-015-0214-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Deb TK, Ramireddy B, Moin A, Shivakumar HG. In vitro-in vivo evaluation of xanthan gum and eudragit inter polyelectrolyte complex based sustained release tablets. Int J Pharm Investig 2015; 5:65-72. [PMID: 25599035 PMCID: PMC4286837 DOI: 10.4103/2230-973x.147236] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introduction: Polyelectrolyte complexes (PECs) are the association complexes formed between oppositely charged particles (e.g., polymer-polymer, polymer-drug and polymer-drug-polymer). These are formed due to electrostatic interaction between oppositely charged polyions. Diclofenac is a nonsteroidal anti-inflammatory drug (NSAID) advocated in use of painful and inflammatory rheumatic and certain non-rheumatic conditions. The drug has a relatively short elimination half-life, which limits the potential for drug accumulation. As an analgesic, it has a fast onset and long duration of action. Aim: invitro-invivo evaluation of Xanthan gum and Eudragit E100 inter polyelectrolyte complex based sustained release tablet. Materials and Method: Xanthan gum and Eudragit E100 were used as PEC and were prepared using different proportions i.e. in 1:1 to 1:6 ratio. The optimum ratio of E100 and XG was 1:6 used to characterize the IPC and the formulation of tablet. The tablets were prepared by wet granulation using PVP K30 as binder. Results and Discussion: FT-IR and DSC studies confirmed the formation of IPC. Scanning Electron Microscopy (SEM) studies showed highly porous tablet surface. The tablets were evaluated for hardness, weight variation, and drug content, found to be within limits. In vitro and in vivo studies concluded that tablets showed sustained release profile. The short term stability study of the optimized formulation indicated that the formulation was stable. Conclusion: Since the Poly Electrolyte Complex delay the release of the drug, it can be employed in formulating sustained release matrix tablets.
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Affiliation(s)
- Tamal Krishna Deb
- Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India
| | - B Ramireddy
- Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India
| | - Afrasim Moin
- Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India
| | - H G Shivakumar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India
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Aleksovski A, Dreu R, Gašperlin M, Planinšek O. Mini-tablets: a contemporary system for oral drug delivery in targeted patient groups. Expert Opin Drug Deliv 2014; 12:65-84. [DOI: 10.1517/17425247.2014.951633] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhu X, Qi X, Wu Z, Zhang Z, Xing J, Li X. Preparation of multiple-unit floating-bioadhesive cooperative minitablets for improving the oral bioavailability of famotidine in rats. Drug Deliv 2014; 21:459-66. [PMID: 24456044 DOI: 10.3109/10717544.2013.879626] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract The aims of this study were to prepare fine famotidine-containing floating-bioadhesive cooperative minitablets and to investigate the possibility of using those minitablets as a delivery system for promoting the oral bioavailability of famotidine. Nine minitablet formulations were designed using hydroxypropylmethylcellulose (HPMC K4M) as release-retarding polymers, Carbopol 971P as bioadhesive materials and sodium bicarbonate (NaHCO3) as gas formers. The prepared 3 ± 0.02 mm minitablets were evaluated in terms of their swelling ability, floating behavior, bioadhesion test and in vitro release. The optimized minitablets (F6) containing HPMC K4M (50.00%, w/w), Carbopol 971P (10.00%, w/w) and NaHCO3 (10.00%, w/w) were found to float in 1 min and remain lastingly buoyant over a period of 8 h in vitro, with excellent bioadhesive properties (20.81 g) and sustained drug release characteristics (T50% = 46.54%) followed one-order model. In addition, plasma concentration-time profiles from pharmacokinetic studies in rats dosed with minitablets showed 1.62-fold (p < 0.05) increased absorption of famotidine, compared to the market tablets XinFaDing®. These studies demonstrated that the multiple-unit floating-bioadhesive cooperative minitablets may be a promising gastro-retentive delivery system for drugs that play a therapeutic role in the stomach.
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Affiliation(s)
- Xuehua Zhu
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University , Nanjing , PR China and
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Mohamed FAA, Roberts M, Seton L, Ford JL, Levina M, Rajabi-Siahboomi AR. The effect of HPMC particle size on the drug release rate and the percolation threshold in extended-release mini-tablets. Drug Dev Ind Pharm 2013; 41:70-8. [PMID: 24134563 DOI: 10.3109/03639045.2013.845843] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The particle size of HPMC is a critical factor that can influence drug release rate from hydrophilic matrix systems. Percolation theory is a statistical tool which is used to study the disorder of particles in a lattice of a sample. The percolation threshold is the point at which a component is dominant in a cluster resulting in significant changes in drug release rates. Mini-tablets are compact dosage forms of 1.5-4 mm diameter, which have potential benefits in the delivery of drug to some patient groups such as pediatrics. In this study, the effect of HPMC particle size on hydrocortisone release and its associated percolation threshold for mini-tablets and tablets was assessed. For both mini-tablets and tablets, large polymer particles reduced tensile strength, but increased the drug release rate and the percolation threshold. Upon hydration, compacts with 45-125 μm HPMC particles formed a strong gel layer with low porosity, reducing hydrocortisone release rates. In comparison, faster drug release rates were obtained when 125-355 µm HPMC particles were used, due to the greater pore sizes that resulted in the formation of a weaker gel. Using 125-355 µm HPMC particles increased the percolation threshold for tablets and to a greater extent for mini-tablets. This work has demonstrated the importance of HPMC particle size in ER matrices, the effects of which are even more obvious for mini-tablets.
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Affiliation(s)
- Faiezah A A Mohamed
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University , Liverpool , UK and
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Mehta R, Chawla A, Sharma P, Pawar P. Formulation and in vitro evaluation of Eudragit S-100 coated naproxen matrix tablets for colon-targeted drug delivery system. J Adv Pharm Technol Res 2013; 4:31-41. [PMID: 23662280 PMCID: PMC3645356 DOI: 10.4103/2231-4040.107498] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The purpose of the present investigation was to prepare matrix tablets of naproxen using a hydrophobic polymer, i.e., Eudragit RLPO, RSPO, and combination of both, by wet granulation method. The tablets were further coated with different concentrations of Eudragit S-100, a pH-sensitive polymer, by dip immerse method. In vitro drug release studies of tablets were carried out in different dissolution media, i.e., 0.1 N HCl (pH 1.2), phosphate buffers pH 6.8 and 7.4, with or without rat cecal content. The swelling studies of the optimized formulation were carried out. The physicochemical parameters of all the formulations were found to be in compliance with the pharmacopoeial standards. The effect of dissolution medium on the surface of matrix tablet was determined by using Scanning Electron Microscopy technique. The stability studies of all formulations were performed as per ICH guidelines. The results demonstrated that the tablets coated with Eudragit S-100 (2% w/v) showed a sustained release of 94.67% for 24 h, but drug release increased to about 98.60% for 24 h in the presence of rat cecal content while the uncoated tablets released the drug within 5 h. With regard to release kinetics, the data were best fitted with the Higuchi model with non-Fickian drug release kinetics mechanism. The stability studies of tablets showed less degradation during accelerated and room temperature storage conditions for 6 months. The enteric-coated Eudragit S-100 coated matrix tablets of naproxen showed promising site-specific drug delivery in the colon region.
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Affiliation(s)
- Rohit Mehta
- Department of Pharmaceutics, Chitkara College of Pharmacy, Chitkara University, Chandigarh-Patiala Highway, Rajpura, Patiala, Punjab, India
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Mohamed FAA, Roberts M, Seton L, Ford JL, Levina M, Rajabi-Siahboomi AR. The influence of HPMC concentration on release of theophylline or hydrocortisone from extended release mini-tablets. Drug Dev Ind Pharm 2012; 39:1167-74. [DOI: 10.3109/03639045.2012.681053] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Roberts M, Vellucci D, Mostafa S, Miolane C, Marchaud D. Development and evaluation of sustained-release Compritol®888 ATO matrix mini-tablets. Drug Dev Ind Pharm 2011; 38:1068-76. [DOI: 10.3109/03639045.2011.638302] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Thakare M, Israel B, Garner ST, Ahmed H, Garner P, Elder D, Price JC, Capomacchia AC. Formulation parameters and release mechanism of theophylline loaded ethyl cellulose microspheres: effect of different dual surfactant ratios. Pharm Dev Technol 2011; 18:1213-9. [DOI: 10.3109/10837450.2011.620969] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Chandran S, Asghar LFA, Mantha N. Design and Evaluation of Ethyl Cellulose Based Matrix Tablets of Ibuprofen with pH Modulated Release Kinetics. Indian J Pharm Sci 2011; 70:596-602. [PMID: 21394255 PMCID: PMC3038283 DOI: 10.4103/0250-474x.45397] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2008] [Revised: 05/28/2008] [Accepted: 09/21/2008] [Indexed: 11/07/2022] Open
Abstract
Controlled release preparations have been reported to reduce the gastro irritant and ulcerogenic effects of non steroidal antiinflammatory drugs. In the present study, an attempt was made to develop matrix tablet-based controlled release formulations of ibuprofen, using ethyl cellulose as the rate-controlling polymer. In order to prevent initial release of the drug in the acidic environment of the stomach, cellulose acetate phthalate was incorporated in the matrix in varying amounts. It was found that with increasing the proportion of ethyl cellulose in the matrix, the drug release was extended for 14-16 h. Incorporation of cellulose acetate phthalate in ethyl cellulose matrix provided very low initial release of the drug in the first 2-3 h followed by enhanced release rate in alkaline medium owing to the high solubility of cellulose acetate phthalate at basic pH which led to creation of a porous matrix. It was concluded that combination of cellulose acetate phthalate with ethyl cellulose in the matrix base can be an effective means of developing a controlled release formulation of ibuprofen with very low initial release followed with controlled release up to 14-16 h.
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Affiliation(s)
- S Chandran
- Formulation Development and Pharmacokinetics Laboratory, Pharmacy Group, Birla Institute of Technology and Science, Pilani-333 031, India
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Kuang SS, Oliveira JC, Crean AM. Microencapsulation as a Tool for Incorporating Bioactive Ingredients into Food. Crit Rev Food Sci Nutr 2010; 50:951-68. [DOI: 10.1080/10408390903044222] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aburahma MH, Hamza YES. Novel sustained-release fast-disintegrating multi-unit compressed tablets of lornoxicam containing Eudragit RS coated chitosan-alginate beads. Pharm Dev Technol 2010; 16:316-30. [DOI: 10.3109/10837451003692595] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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A novel approach to sustained pseudoephedrine release: Differentially coated mini-tablets in HPMC capsules. Int J Pharm 2008; 359:46-52. [DOI: 10.1016/j.ijpharm.2008.03.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 01/24/2008] [Accepted: 03/15/2008] [Indexed: 11/22/2022]
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22
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Avachat A, Kotwal V. Design and evaluation of matrix-based controlled release tablets of diclofenac sodium and chondroitin sulphate. AAPS PharmSciTech 2007; 8:E88. [PMID: 18181548 PMCID: PMC2750558 DOI: 10.1208/pt0804088] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 03/15/2007] [Accepted: 03/15/2007] [Indexed: 11/30/2022] Open
Abstract
The purpose of the present study was to develop and characterize an oral controlled release drug delivery system for concomitant administration of diclofenac sodium (DS) and chondroitin sulfate (CS). A hydrophilic matrix-based tablet using different concentrations of hydroxypropylmethylcellulose (HPMC) was developed using wet granulation technique to contain 100 mg of DS and 400 mg of CS. Formulations prepared were evaluated for the release of DS and CS over a period of 9 hours in pH 6.8 phosphate buffer using United States Pharmacopeia (USP) type II dissolution apparatus. Along with usual physical properties, the dynamics of water uptake and erosion degree of tablet were also investigated. The in vitro drug release study revealed that HPMC K100CR at a concentration of 40% of the dosage form weight was able to control the simultaneous release of both DS and CS for 9 hours. The release of DS matched with the marketed CR tablet of DS with similarity factor (f(2)) above 50. Water uptake and erosion study of tablets indicated that swelling followed by erosion could be the mechanism of drug release. The in vitro release data of CS and DS followed Korsmeyer-Peppas and zero-order kinetics, respectively. In conclusion, the in vitro release profile and the mathematical models indicate that release of CS and DS can be effectively controlled from a single tablet using HPMC matrix system.
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Affiliation(s)
- Amelia Avachat
- Department of Pharmaceutics, Sinhgad College of Pharmacy, Vadgaon (Budruk), Pune - 411041, India.
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Lopes CM, Lobo JMS, Pinto JF, Costa P. Compressed mini-tablets as a biphasic delivery system. Int J Pharm 2006; 323:93-100. [PMID: 16828999 DOI: 10.1016/j.ijpharm.2006.05.063] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Revised: 05/09/2006] [Accepted: 05/24/2006] [Indexed: 10/24/2022]
Abstract
Compressed mini-tablets systems are presented as a biphasic delivery system designed for zero-order sustained drug release. The outer layer that fills the void spaces between the mini-tablets was formulated to release the drug in a very short time (fast release), while the mini-tablets provided a prolonged release. Different composition (HPMC or EC) and number (10 or 21) of mini-tablets were used to obtain different drug release rates. The in vitro performance of these systems showed the desired biphasic behaviour: the drug contained in the fast releasing phase (powder enrobing the mini-tablets) dissolved within the first 2 min, whereas the drug contained in the mini-tablets was released at different rates, depending up on formulation. Based on the release kinetic parameters calculated, it can be concluded that mini-tablets containing HPMC were particularly suitable approaching to zero-order (constant) release over 8h time periods.
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Affiliation(s)
- Carla M Lopes
- Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha 164, 4050-047 Porto, Portugal.
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