{"title":"Summary Report on Workshop on In Vitro Release Test (IVRT) and In Vitro Permeation Test (IVPT) Methods","authors":"K. Thakker","doi":"10.14227/dt280421p450","DOIUrl":"https://doi.org/10.14227/dt280421p450","url":null,"abstract":"","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Data Set to Verify Volume and Sample Removal Correction Calculations for Dissolution Testing","authors":"Alger D. Salt","doi":"10.14227/DT280221P16","DOIUrl":"https://doi.org/10.14227/DT280221P16","url":null,"abstract":"Software in the form of a spreadsheet, computer program, or web-based application is typically used to perform the appropriate mathematical corrections to dissolution profile data to correct for the amount of sample solution removed from the dissolution vessels at each time interval. Because the sample solutions contain analyte and because removal changes the volume of dissolution medium remaining in the vessels, such corrections are sometimes necessary to determine accurate values. This article presents results from a mental exercise where a theoretical dissolution profile was constructed. These data can be used to verify the accuracy of such calculations.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"28 1","pages":"16-20"},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66812857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Questions and Answers August 2021","authors":"Margareth R. C. Marques, M. Liddell","doi":"10.14227/dt280321p46","DOIUrl":"https://doi.org/10.14227/dt280321p46","url":null,"abstract":"","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniela Amaral Silva, K. J. Curo Melo, N. Davies, N. Bou-Chacra, H. Ferraz, R. Löbenberg
{"title":"A BCS-Based Biowaiver Approach Using Biphasic Dissolution Test","authors":"Daniela Amaral Silva, K. J. Curo Melo, N. Davies, N. Bou-Chacra, H. Ferraz, R. Löbenberg","doi":"10.14227/dt280421p40","DOIUrl":"https://doi.org/10.14227/dt280421p40","url":null,"abstract":"Biowaivers based on the Biopharmaceutics Classification System (BCS) class can be used to establish therapeutic equivalence based on dissolution tests, which can be used as a surrogate to determine if two pharmaceutical equivalent products are interchangeable (i.e., bioequivalent). The objective of the present study was to use a biphasic dissolution system to replicate a study in which the authors followed compendial methods to examine the in vitro performance of widely used drug products. Furthermore, since biphasic dissolution studies are mainly applied to poorly soluble drugs, the present study was conducted to broaden its application to highly soluble drugs. The approach taken in this manuscript was to have scientific insight and mechanistic understanding rather than a strict regulatory application. In the initial study, none of the tested metronidazole products were (in vitro) equivalent to the comparator pharmaceutical product (CPP) or to other manufacturers. We hypothesized that whereas in vitro equivalence was not achieved in compendial methods, the partitioning profile to the organic phase in the biphasic system could signal in vitro equivalence between the tested drug products and CPP. In the aqueous phase of the biphasic system, the tested metronidazole products followed a similar pattern as obtained in the compendial buffer; however, this was not the case for the organic phase partition profiles. All the tested products had a good correlation to the CPP, which could indicate in vitro equivalence between these products. This could potentially allow for a biowaiver application. Hence, the application of biphasic dissolution to highly soluble drugs might be beneficial to estimate the product’s in vivo behavior. Further clinical studies would be needed to confirm these findings to guarantee their interchangeability.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Questions and Answers May 2021","authors":"Margareth R. C. Marques, M. Liddell","doi":"10.14227/DT280221P43","DOIUrl":"https://doi.org/10.14227/DT280221P43","url":null,"abstract":"","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"28 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Questions and Answers November 2021","authors":"Margareth R. C. Marques, M. Liddell","doi":"10.14227/dt280421p54","DOIUrl":"https://doi.org/10.14227/dt280421p54","url":null,"abstract":"","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Najmi, Mohammed Al Bratty, B. Al-Bassam, Rami Ali Aseri, Turki Suliman Wadani, Abdulrahman Ibrahim Al-Muntashiri, H. A. Alhazmi, M. Sultan, S. Javed
{"title":"Evaluation of In Vitro Equivalence of Commonly Available Generic Brands of Amlodipine Tablets in Saudi Arabia Under Biowaiver Conditions","authors":"A. Najmi, Mohammed Al Bratty, B. Al-Bassam, Rami Ali Aseri, Turki Suliman Wadani, Abdulrahman Ibrahim Al-Muntashiri, H. A. Alhazmi, M. Sultan, S. Javed","doi":"10.14227/DT280221PGC1","DOIUrl":"https://doi.org/10.14227/DT280221PGC1","url":null,"abstract":"When a medicine is not able to treat the disease for which it was intended, as in case of substandard and falsified drug products, it may prolong the disease and in worst scenario, the patient may die because of the untreated illness or the product itself. To ensure the quality and safety of medicine, WHO recommends timely evaluation of pharmaceutical quality. The present study is an attempt to evaluate the pharmaceutical properties and in vitro drug release of four generic brands and one innovator product (Norvasc) of amlodipine tablets (5 mg) according to USP and WHO guidelines. The products passed the compendial specifications of weight variation (˂ 5% deviation), friability (˂ 1% weight loss), and assay (90–110% of labeled amount). The tablets were fast-disintegrating, as complete disintegration observed in 1.20–1.64 min. The dissolution profiles of the generic products were equivalent to the innovator brand in pH 1.2 HCl and acetate buffer (pH 4.5) without statistical treatment (≥ 85% release in 15 min). In phosphate buffer (pH 6.8), ≥ 85% of drug dissolved in 30 min and in vitro equivalence was established by calculating the difference factor (f1 ˂ 15), similarity factor (f2 ˃ 50), and dissolution efficiency (± 10%). The tested brands met WHO BCS-based biowaiver criteria for in vitro dissolution testing, which ensured their pharmaceutical and therapeutic equivalence without in vivo screening and interchangeability with the innovator product.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"3 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thalita Martins da Silva, Marcelo Chaves, B. F. C. Patricio, H. Rocha
{"title":"Comparison of Efavirenz Release in Biorelevant Dissolution Media Using Manual Sampling and In Situ UV Fiber Optic System","authors":"Thalita Martins da Silva, Marcelo Chaves, B. F. C. Patricio, H. Rocha","doi":"10.14227/dt280321p6","DOIUrl":"https://doi.org/10.14227/dt280321p6","url":null,"abstract":"There has been a growing interest in the use of biorelevant dissolution media in drug formulations research and development. Biorelevant media mimic the physiological conditions of the human gastrointestinal tract, which allows for a more discriminating dissolution test. That is even more important for poorly soluble drugs, like efavirenz and other class II (Biopharmaceutical Classification System) drugs. Traditionally, these media were used in the compendial standard dissolution apparatus; however, reduced automation of the conventional tests could be, in general, costly, high-labor, and error-prone. Thus, the use of in situ ultraviolet (UV) fiber optic probes has been applied in research and development and in quality control routines for drug manufacturing. The present study aims to assess the suitability of an in situ UV dynamic monitoring system for characterization of dissolution behavior of 600-mg efavirenz immediate-release coated tablets in different biorelevant media by comparison with traditional manual sampling. The biorelevant media used were fasted and fed state simulated intestinal fluid (FaSSIF, FaSSIF-V2, FeSSIF, FeSSIF-V2) and SLS (0.5%). Both sampling methods were similar for FaSSIF, FaSSIF-V2, and SLS. For FeSSIF and FeSSIF-V2, the results were statistically different due to high concentration of oxidation phospholipids and degradation lipids in these media. These results support the use of dynamic monitoring of dissolution in FaSSIF, FaSSIF-V2, and SLS, and inform understanding of the rate-limiting steps, which may improve quality and accuracy in data acquisition for dissolution tests with biorelevant media.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66813272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Isaac, Galadima I. Hayatu, J. E. John, K. Ekere, Aisha Daburi, Sunday O. Omachoko, Philip F. Buiders
{"title":"Quality Assessment of Brands of Prednisolone (5 Mg) Tablets Marketed in Abuja Metropolis of Nigeria","authors":"J. Isaac, Galadima I. Hayatu, J. E. John, K. Ekere, Aisha Daburi, Sunday O. Omachoko, Philip F. Buiders","doi":"10.14227/DT280121P24","DOIUrl":"https://doi.org/10.14227/DT280121P24","url":null,"abstract":"This study aims to evaluate the quality of brands of prednisolone tablets marketed in Nigeria. Quality control parameters such as weight variation, hardness, friability, disintegration, assay, and dissolution were assessed. Ten of 11 brands tested met the United States Pharmacopeia (USP) specifications for dissolution of immediate-release dosage forms at stage S1 or S2, but one brand failed to meet the requirement even at stage S3. Using a validated method, all brands except one contained the labelled drug amount per USP specifications (100 ± 10%). Seven brands failed the hardness test, but there were no issues with other parameters like friability, weight variation, and disintegration. This study demonstrates that most generics of prednisolone tablets currently circulating in Abuja, Nigeria are of good quality.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"28 1","pages":"24-31"},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66812853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of Drug Release Kinetics and Quality of Naproxen Generic Tablets in Bangladesh","authors":"Madhabi Lata Shuma, Amrin Jahan, S. Halder","doi":"10.14227/DT280221P30","DOIUrl":"https://doi.org/10.14227/DT280221P30","url":null,"abstract":"The present study aimed to compare the in vitro equivalence of different generic tablets of naproxen available with the reference brand in the Bangladesh pharmaceutical market. As naproxen belongs to the biopharmaceutics classification system (BCS) class-II drug, interchangeability among commercial products must be demonstrated through in vivo bioequivalence studies. However, in Bangladesh, such studies remain to be performed. An in vitro dissolution study was carried out using the United States Pharmacopoeia (USP) paddle method and the dissolution profiles of the generic products were compared with the reference brand. Quality assessment parameters including hardness, friability, and disintegration time were also evaluated. Similar dissolution behavior was found with the reference brand using a modeldependent and model-independent approach (f2 > 50, f1 < 15), and there were no statistically significant differences. The best-fit kinetic model was the Korsmeyer-Peppas model, indicating that the mechanism of dissolution is predominantly diffusion. All commercial products complied with the official specifications. The results from this study suggest that the naproxen formulations available in the Bangladesh market could be used interchangeably for optimal therapeutic outcomes.","PeriodicalId":11380,"journal":{"name":"Dissolution Technologies","volume":"28 1","pages":"30-35"},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66812998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}