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Simão J, Chaudhary SA, Ribeiro AJ. Implementation of Quality by Design (QbD) for development of bilayer tablets. Eur J Pharm Sci 2023; 184:106412. [PMID: 36828037 DOI: 10.1016/j.ejps.2023.106412] [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: 11/03/2022] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023]
Abstract
Bilayer tablets offer various drug release profiles for individual drugs incorporated in each layer of a bilayer tablet, which is rarely achievable by conventional tablets. These tablets also help avoid physicochemical incompatibilities between drugs and excipients. Successful manufacturing of such more complex dosage forms depends upon screening of material attributes of API and excipients as well as optimization of processing parameters of individual unit operations of the manufacturing process that must be strictly monitored and controlled to obtain an acceptable drug product quality and performance in order to achieve safety and efficacy per regulatory requirements. Optimizing formulation attributes and manufacturing processes during critical stages, such as blending, granulation, pre-compression, and main compression, can help avoid problems such as weight variation, segregation, and delamination of individual layers, which are frequently faced during the production of bilayer tablets. The main objective of this review is to establish the basis for the implementation of Quality by Design (QbD) system principles for the design and development of bilayer tablets, encompassing the preliminary and systematic risk assessment of critical material attributes (CMAs) and critical process parameters (CPPs) with respect to in-process and finished product critical quality attributes (CQAs). Moreover, the applicability of the QbD methodology based on its purpose is discussed and complemented with examples of bilayer tablet technology.
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Affiliation(s)
- J Simão
- Faculdade de Farmácia, Universidade de Coimbra, Coimbra, Portugal
| | - S A Chaudhary
- National Institute of Pharmaceutical Education and Research, Ahmedabad, India
| | - A J Ribeiro
- Faculdade de Farmácia, Universidade de Coimbra, Coimbra, Portugal; i3S, IBMC, Rua Alfredo Allen, Porto, Portugal.
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2
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The effect of granules characters on mechanical properties of press-coated tablets: A comparative study. Int J Pharm 2022; 624:121986. [PMID: 35820516 DOI: 10.1016/j.ijpharm.2022.121986] [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: 02/22/2022] [Revised: 07/02/2022] [Accepted: 07/02/2022] [Indexed: 11/20/2022]
Abstract
The aim of this study was to investigate the correlation between critical granules characters (including particle size, surface roughness, and apparent porosity) and mechanical properties of press-coated tablets. Granules of a model formulation were prepared through Roll Compaction Granulation (RCG), High Shear Granulation (HSG), and Fluidized Bed Granulation (FBG) to prepare granules with different surface roughness and apparent porosity. The surface roughness and porosity of granules had a significantly greater effect on mechanical properties than the particle size of granules. Whether for brittle or plastic materials, FBG granules with the roughest surface and the greatest apparent porosity exhibited the best compression properties. The elastic recovery test, the interlayer adhesion forces study, the break pattern test, and the X-ray microcomputed tomography investigation suggested that granules with great apparent porosity and rough surfaces could contribute to the production of stable press-coated structures. Moreover, for press-coated tablets prepared using granules, the proper granules in the coat layer could eliminate the side effect of the rigid core on the mechanical strength. The above understandings will be conducive to the selection of compatible and appropriate granules characters, which can enhance mechanical properties and extend the application of press-coated tablets.
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3
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Schönfeld BV, Westedt U, Wagner KG. Compression Modulus and Apparent Density of Polymeric Excipients during Compression-Impact on Tabletability. Pharmaceutics 2022; 14:913. [PMID: 35631499 PMCID: PMC9147214 DOI: 10.3390/pharmaceutics14050913] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 12/10/2022] Open
Abstract
The present study focuses on the compaction behavior of polymeric excipients during compression in comparison to nonpolymeric excipients and its consequences on commonly used Heckel analysis. Compression analysis at compaction pressures (CPs) from 50 to 500 MPa was performed using a compaction simulator. This study demonstrates that the particle density, measured via helium pycnometer (ρpar), of polymeric excipients (Kollidon®VA64, Soluplus®, AQOAT®AS-MMP, Starch1500®, Avicel®PH101) was already exceeded at low CPs (<200 MPa), whereas the ρpar was either never reached for brittle fillers such as DI-CAFOS®A60 and tricalcium citrate or exceeded at CPs above 350 MPa (FlowLac®100, Pearlitol®100SD). We hypothesized that the threshold for exceeding ρpar is linked with predominantly elastic deformation. This was confirmed by the start of linear increase in elastic recovery in-die (ERin-die) with exceeding particle density, and in addition, by the applicability in calculating the elastic modulus via the equation of the linear increase in ERin-die. Last, the evaluation of “density under pressure” as an alternative to the ρpar for Heckel analysis showed comparable conclusions for compression behavior based on the calculated yield pressures. However, the applicability of Heckel analysis for polymeric excipients was questioned in principle. In conclusion, the knowledge of the threshold provides guidance for the selection of suitable excipients in the formulation development to mitigate the risk of tablet defects related to stored elastic energy, such as capping and lamination.
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Affiliation(s)
- Barbara V. Schönfeld
- AbbVie Deutschland GmbH & Co. KG, Knollstraße 50, 67061 Ludwigshafen am Rhein, Germany; (B.V.S.); (U.W.)
- Department of Pharmaceutical Technology, University of Bonn, Gerhard-Domagk-Straße 3, 53121 Bonn, Germany
| | - Ulrich Westedt
- AbbVie Deutschland GmbH & Co. KG, Knollstraße 50, 67061 Ludwigshafen am Rhein, Germany; (B.V.S.); (U.W.)
| | - Karl G. Wagner
- Department of Pharmaceutical Technology, University of Bonn, Gerhard-Domagk-Straße 3, 53121 Bonn, Germany
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4
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Picart L, Mazel V, Moulin A, Bourgeaux V, Tchoreloff P. Breaking patterns of press-coated tablets during the diametral compression test: Influence of the product, geometry and process parameters. Int J Pharm 2022; 612:121371. [PMID: 34902454 DOI: 10.1016/j.ijpharm.2021.121371] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 11/28/2022]
Abstract
Press-coated tablets are a high-interest technology in chronopharmaceutics, for modified release applications. As for any kind of tablet, the test of the mechanical resistance is of primary importance at the industrial level during both the development and production steps. For this purpose, the diametral compression test is commonly used in the industry for press-coated tablets. Nevertheless, the result of this test can be much more complex compared to the case of single layer tablets. This work aims to study the applicability of this test to press-coated tablets. Diametral compression tests were performed on press-coated tablets obtained with different products (shell/core), shell sizes and compaction pressures. Four types of breaking profiles were found: total diametral, shell diametral, around the core and laminated depending on the process parameters/products used to obtain the tablet. Digital image correlation was used in order to understand the breaking patterns especially in terms of failure initiation and propagation. The kind of breaking pattern obtained is dependent on the final structure of the tablet in terms of density distribution and thus of elastic properties. To confirm the findings, numerical simulations by the finite element method was used to visualize the stress distribution inside the tablet and confirm the influence of the process parameters. The multiple failure profiles obtained imply that the output value of the diametral compression test applied to press-coated tablets should be taken with caution.
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Affiliation(s)
- Léo Picart
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France; Skyepharma Production SAS, 55 rue du Montmurier, 38070 Saint-Quentin-Fallavier, France
| | - Vincent Mazel
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France.
| | - Aline Moulin
- Skyepharma Production SAS, 55 rue du Montmurier, 38070 Saint-Quentin-Fallavier, France
| | - Vanessa Bourgeaux
- Skyepharma Production SAS, 55 rue du Montmurier, 38070 Saint-Quentin-Fallavier, France
| | - Pierre Tchoreloff
- Univ. Bordeaux, CNRS, Arts et Metiers Institute of Technology, Bordeaux INP, INRAE, I2M Bordeaux, F-33400 Talence, France
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Svačinová P, Mužíková J, Ondrejček P. Comparison of Compressibility, Compactability, and Lubricant Sensitivity of Two Partially Pregelatinized Starches. STARCH-STARKE 2020. [DOI: 10.1002/star.202000166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Petra Svačinová
- Department of Pharmaceutical Technology Charles University Faculty of Pharmacy in Hradec Králové Akademika Heyrovského 1203 Hradec Králové 500 05 Czech Republic
| | - Jitka Mužíková
- Department of Pharmaceutical Technology Charles University Faculty of Pharmacy in Hradec Králové Akademika Heyrovského 1203 Hradec Králové 500 05 Czech Republic
| | - Pavel Ondrejček
- Sotax Pharmaceutical Testing s.r.o. Průmyslová 1306 Prague 102 00 Czech Republic
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6
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Akhtar M, Jamshaid M, Zaman M, Mirza AZ. Bilayer tablets: A developing novel drug delivery system. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.102079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Bourduche F, Sanchez-Ballester NM, Bataille B, Lefèvre P, Sharkawi T. Structure-Property Relationship of Amorphous Maltitol as Tableting Excipient. AAPS PharmSciTech 2020; 21:281. [PMID: 33051782 DOI: 10.1208/s12249-020-01824-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/14/2020] [Indexed: 11/30/2022] Open
Abstract
Maltitol shows interesting properties compared with mannitol or sorbitol, two other polyols, which are widely used as a pharmaceutical excipients for tablet compaction. For this study, the properties of an amorphous polyol, maltitol, were investigated using a tablet press simulator. The aim of this study was to evaluate the behavior of amorphous maltitol compared to SweetPearl® P 200, a pure product, and SweetPearl® P 300 DC, a textured crystalline maltitol excipient for direct compression. The physicochemical and pharmacotechnical properties were compared, revealing a major change in properties after amorphization. The study of the tabletability, mean yield pressure, elastic properties, etc. shows that the compression behavior of amorphous powders has been significantly altered. The results showed specific properties of amorphous maltitol with good tabletability at low compaction pressure. The stability of the amorphous and the evolution of its behavior in compression were then studied, showing a direct link between its recrystallization and the change in its properties. The use of a stabilizing agent, maltotriitol, slowed down the recrystallization, maintaining the specific properties of the amorphous material in compression for a longer period of time.
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8
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Nguyen TT, Park HR, Cho CH, Hwang KM, Park ES. Investigation of critical factors affecting mechanical characteristics of press-coated tablets using a compaction simulator. Int J Pharm 2020; 582:119308. [PMID: 32272166 DOI: 10.1016/j.ijpharm.2020.119308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/17/2020] [Accepted: 04/04/2020] [Indexed: 10/24/2022]
Abstract
Press-coated tablets have become an indispensable dosage form in chronotherapeutic drug delivery. Drug release from press-coated tablets has been extensively studied, yet there is little knowledge about their mechanical characteristics. This study aimed to systematically investigate the effects of critical factors on the structure, layer adhesion, and delamination tendency of the tablets. Material elasticity was found to play an important role in determining tablet structure in that excessive elastic mismatch between core and shell materials caused tablet defects during decompression and ejection. Unlike bilayer tablets, the overall strength of press-coated tablets was more affected by binding capacity of coating materials than by the core properties. Shell/core ratio was another factor affecting tablet integrity against external stresses. To mitigate the risk of delamination, poor layer adhesion must be compensated by increasing the coating thickness or enhanced by optimizing the formulation and process (e.g., core plasticity/brittleness, initial core solid fraction, and compression speed). X-ray micro-computed tomography revealed the presence of a shell-core gap and inhomogeneous density distribution within the tablet where the side coat appeared as the least dense and weakest region. These findings will enable the improvement of tablet quality and widen the application of press coating in industrial manufacturing.
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Affiliation(s)
- Thi-Tram Nguyen
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hye-Ryeong Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol-Hee Cho
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyu-Mok Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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9
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Challenges in technology of bilayer and multi-layer tablets: a mini-review. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2019. [DOI: 10.2478/cipms-2019-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Bilayer and multi-layer tablets are enjoying growing popularity among original drug and generic product manufacturers. Multi-layer tablets have many key benefits compared to classic immediate-release tablets. The use of such solid oral dosage forms simplifies dosing regimens in combination therapy, and thus improves patient compliance. However, the technology of multilayer tablets is demanding and requires precise choice of excipients and production parameters with regard to each technological step. The main benefits of multi-layer tablets, certain aspects of their production and the challenges encountered during the compression process are reviewed in this paper.
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10
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Bellini M, Walther M, Bodmeier R. Evaluation of manufacturing process parameters causing multilayer tablets delamination. Int J Pharm 2019; 570:118607. [DOI: 10.1016/j.ijpharm.2019.118607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 08/05/2019] [Accepted: 08/09/2019] [Indexed: 10/26/2022]
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11
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Chang SY, Sun CC. Insights into the effect of compaction pressure and material properties on interfacial bonding strength of bilayer tablets. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Fuenmayor E, O'Donnell C, Gately N, Doran P, Devine DM, Lyons JG, McConville C, Major I. Mass-customization of oral tablets via the combination of 3D printing and injection molding. Int J Pharm 2019; 569:118611. [PMID: 31415874 DOI: 10.1016/j.ijpharm.2019.118611] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/16/2019] [Accepted: 08/10/2019] [Indexed: 02/08/2023]
Abstract
The new frontier of medicine is the personalization of treatment to match a patient's individual needs. Fused-filament fabrication (FFF) offers a platform for the personalization of drug dosage forms, but one of its chief shortcomings compared to other tablet production methods such as dry compression and wet granulation is relatively low throughput. Conversely, injection molding (IM) is a manufacturing technique for the high-volume production of parts, but in which individual part customization is both expensive and slow requiring the modification of expensive mold tooling. Mass-customization is the manufacture of custom products that match the needs of individual consumers but which are produced at the low unit cost associated with high-volume production. We successfully integrated for the first time FFF with IM in a multi-step manufacturing process for the production of custom bilayer tablets loaded with two active pharmaceutical ingredients used in the treatment of cardiovascular disease. The FFF layer was loaded with the diuretic hydrochlorothiazide, while the IM layer was loaded with lovastatin. Infill percentage was varied for the FFF layer as a means to modify drug release. The IM injection pressure was evaluated for its effect on drug release and layer-layer adhesion. The bilayer tablets obtained offered different combinations of drug release profiles, which were governed by a combination of factors, including surface area to volume ratio; IM injection volume penetration into the FFF layer; FFF infill percentage; layer tortuosity and porosity. These different parameters could be utilized to modify the individual release of both drugs from the bilayer tablet. Thus for the first time, we have demonstrated a viable method for the mass-customization of oral tablets which could hasten the rollout of personalized medicine.
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Affiliation(s)
- Evert Fuenmayor
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - Crevan O'Donnell
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - Noel Gately
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - Patrick Doran
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - Declan M Devine
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - John G Lyons
- Faculty of Engineering and Informatics, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland
| | - Christopher McConville
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, UK
| | - Ian Major
- Materials Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, Ireland.
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13
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Minimum Interfacial Bonding Strength for Bilayer Tablets Determined Using a Survival Test. Pharm Res 2019; 36:139. [DOI: 10.1007/s11095-019-2675-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 07/20/2019] [Indexed: 10/26/2022]
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14
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Zhu C, Xu S, Han X, Wang W, He W, Yin L, Yang L, Qin C. Sustained Release Bilayer Tablet of Ibuprofen and Phenylephrine Hydrochloride: Preparation and Pharmacokinetics in Beagle Dogs. AAPS PharmSciTech 2019; 20:86. [PMID: 30673916 DOI: 10.1208/s12249-018-1271-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 12/04/2018] [Indexed: 11/30/2022] Open
Abstract
Cold is a global common infectious disease accompanied by symptoms such as headache and stuffy nose. Ibuprofen (IBU) and phenylephrine hydrochloride (PE) were commonly used for common cold due to their different effects in relieving fever and the main symptoms such as nasal congestion and high sinus pressure. However, the commercial tablets of IBU and PE have to be administered 2 to 3 times per day due to their short half-life, with inconvenience for patient and fluctuations of plasma concentration. Bilayer tablet technology was utilized to design the IBU-PE sustained release tablets because of the significantly different solubility of IBU and PE in release media. The formulations of IBU layer and PE layer contain different viscosity grades of hydroxypropyl methylcellulose (HPMC) as sustained-release matrix, hydrophilic diluent, and traditional glidant and lubricant. The sustained release bilayer tablet exhibited satisfying sustained release performance with the mechanisms of diffusion and matrix erosion. Compared with the conventional tablets, the IBU-PE sustained release bilayer tablet expressed significantly sustained-release behavior with decreased Cmax and prolonged Tmax in fasted conditions for IBU and PE. Though IBU of IBU-PE sustained release bilayer tablet was bioequivalent to the commercial IBU tablet, the relative bioavailability of PE from the bilayer tablets was 87.49 ± 20.00% (90% confidence interval was 72.3 to 102.5%), indicating bioinequivalence probably due to the "first pass" effect.
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Demiri V, Stranzinger S, Rinner P, Piller M, Sacher S, Lingitz J, Khinast J, Salar-Behzadi S. Gluing Pills Technology: A novel route to multilayer tablet manufacturing. Int J Pharm 2018; 548:672-681. [DOI: 10.1016/j.ijpharm.2018.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/29/2018] [Accepted: 07/01/2018] [Indexed: 11/16/2022]
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17
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Optimization of the Critical Parameters of the Spherical Agglomeration Crystallization Method by the Application of the Quality by Design Approach. MATERIALS 2018; 11:ma11040635. [PMID: 29677152 PMCID: PMC5951519 DOI: 10.3390/ma11040635] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/12/2018] [Accepted: 04/18/2018] [Indexed: 12/04/2022]
Abstract
This research work presents the use of the Quality by Design (QbD) concept for optimization of the spherical agglomeration crystallization method in the case of the active agent, ambroxol hydrochloride (AMB HCl). AMB HCl spherical crystals were formulated by the spherical agglomeration method, which was applied as an antisolvent technique. Spherical crystals have good flowing properties, which makes the direct compression tableting method applicable. This means that the amount of additives used can be reduced and smaller tablets can be formed. For the risk assessment, LeanQbD Software was used. According to its results, four independent variables (mixing type and time, dT (temperature difference between solvent and antisolvent), and composition (solvent/antisolvent volume ratio)) and three dependent variables (mean particle size, aspect ratio, and roundness) were selected. Based on these, a 2–3 mixed-level factorial design was constructed, crystallization was accomplished, and the results were evaluated using Statistica for Windows 13 program. Product assay was performed and it was revealed that improvements in the mean particle size (from ~13 to ~200 µm), roundness (from ~2.4 to ~1.5), aspect ratio (from ~1.7 to ~1.4), and flow properties were observed while polymorphic transitions were avoided.
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18
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Discrete particle modeling and micromechanical characterization of bilayer tablet compaction. Int J Pharm 2017; 529:597-607. [DOI: 10.1016/j.ijpharm.2017.07.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 06/30/2017] [Accepted: 07/10/2017] [Indexed: 11/18/2022]
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19
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Chang SY, Li JX, Sun CC. Tensile and shear methods for measuring strength of bilayer tablets. Int J Pharm 2017; 523:121-126. [DOI: 10.1016/j.ijpharm.2017.03.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/27/2017] [Accepted: 03/07/2017] [Indexed: 11/26/2022]
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20
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Castrati L, Mazel V, Diarra H, Busignies V, Tchoreloff P. Effect of the Curvature of the Punches on the Shape of the Interface and the Delamination Tendency of Bilayer Tablets. J Pharm Sci 2017; 106:1331-1338. [PMID: 28137698 DOI: 10.1016/j.xphs.2017.01.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 01/12/2017] [Accepted: 01/18/2017] [Indexed: 10/20/2022]
Abstract
Bilayer tablets are of special interest in the pharmaceutical industry. The main problem during their manufacturing is the occurrence of delamination during or after the ejection from the die. This work studies the influence of using punches with a curvature on the interfacial strength and thus on the delamination tendency of bilayer tablets. Bilayer tablets were produced with a compaction simulator using different flat and concave punches with different radii of curvature. The main compaction pressure was kept constant but the tamping force was varied. Two bilayer model systems were studied. The interfacial strength was determined using a previously described indentation test. The factors studied were analyzed for statistical significance with respect to the responses. The curvature of the interface was found to be higher when the curvature of the punch and the tamping force increased. Breaking tests then demonstrated that, for bilayer tablets obtained using the same compression parameters, the interfacial strength was lower when the curvature of the interface increased. As a consequence, when producing bilayer tablets with concave punches, it is important to choose properly the tableting parameters in order to have an interface between the layers as flat as possible to avoid delamination issues.
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Affiliation(s)
- Luca Castrati
- University of Bordeaux, CNRS, Bordeaux INP, Arts et Métiers ParisTech, I2M, UMR 5295, 146 rue Léo Saignat, Bordeaux F-33000, France
| | - Vincent Mazel
- University of Bordeaux, CNRS, Bordeaux INP, Arts et Métiers ParisTech, I2M, UMR 5295, 146 rue Léo Saignat, Bordeaux F-33000, France.
| | - Harona Diarra
- University of Bordeaux, CNRS, Bordeaux INP, Arts et Métiers ParisTech, I2M, UMR 5295, 146 rue Léo Saignat, Bordeaux F-33000, France
| | - Virginie Busignies
- University of Bordeaux, CNRS, Bordeaux INP, Arts et Métiers ParisTech, I2M, UMR 5295, 146 rue Léo Saignat, Bordeaux F-33000, France
| | - Pierre Tchoreloff
- University of Bordeaux, CNRS, Bordeaux INP, Arts et Métiers ParisTech, I2M, UMR 5295, 146 rue Léo Saignat, Bordeaux F-33000, France
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Castrati L, Mazel V, Busignies V, Diarra H, Rossi A, Colombo P, Tchoreloff P. Comparison of breaking tests for the characterization of the interfacial strength of bilayer tablets. Int J Pharm 2016; 513:709-716. [DOI: 10.1016/j.ijpharm.2016.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/06/2016] [Accepted: 10/02/2016] [Indexed: 11/29/2022]
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22
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Chudiwal SS, Dehghan MHG. Quality by design approach for development of suspension nasal spray products: a case study on budesonide nasal suspension. Drug Dev Ind Pharm 2016; 42:1643-52. [PMID: 26943653 DOI: 10.3109/03639045.2016.1160108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of this study was to provide quality by design (QbD) approach for development of suspension type nasal spray products. Quality target product profile (QTPP) of test product budesonide nasal suspension (B-NS) was defined and critical quality attributes (CQAs) were identified. Critical formulation, process and delivery device variables were recognized. Risk assessment was performed by using failure mode and effect analysis (FMEA) methodology. Selected variables were further assessed using a Plackett Burman screening study. A response surface design consisting of the critical factors was used to study the interactions between the study variables. Formulation variable X2: median particle size of budesonide (D50) (µ) has strikingly influenced dissolution (%) (Y1), while D50 droplet size distribution (µm) (Y2) was significantly impacted by formulation variable X1: Avicel RC 591 (%) and process variable X4: homogenization speed (rpm). A design space plot within which the CQAs remained unchanged was established at lab scale. A comprehensive approach for development of B-NS product based on the QbD methodology has been demonstrated. The accuracy and robustness of the model were confirmed by comparability of the predicted value generated by model with the observed value.
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Abebe A, Akseli I, Sprockel O, Kottala N, Cuitiño AM. Review of bilayer tablet technology. Int J Pharm 2014; 461:549-58. [DOI: 10.1016/j.ijpharm.2013.12.028] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/11/2013] [Accepted: 12/15/2013] [Indexed: 10/25/2022]
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