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HIV/AIDS treatment and physicochemical quality control of medicines: evaluation of non-generic lamivudine + zidovudine tablets manufactured in Brazil BJID
Beck,Ruy Carlos Ruver; Athayde,Margareth Linde; Cardoso,Simone Gonçalves.
In this work it was evaluated the physicochemical quality of lamivudine + zidovudine tablets, whose association belongs to the list of drugs distributed by the Brazil's National Program on Sexually Transmitted Diseases and AIDS. Four non-generic products (lamivudine + zidovudine tablets) were analyzed. They were obtained from different Brazilian manufacturers, besides a reference product. The quality was evaluated by physicochemical tests described in the official codes. A validated reversed-phase high performance liquid chromatography (HPLC) method was used for the assay of the active substances. All samples were in accordance to the requisites in relation to their physicochemical characteristics. Dissolution studies showed similar drug percentual...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antiretroviral therapy; Quality control; Lamivudine; Public health; Tablets; Zidovudine.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000600003
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Spectrophotometric and HPLC determination of deflazacort in pharmaceutical dosage forms BJPS
Scremin,Amarilis; Piazzon,Monika; Silva,Marcos Antonio Segatto; Kuminek,Gislaine; Correa,Giane Márcia; Paulino,Niraldo; Cardoso,Simone Gonçalves.
Deflazacort (DFZ) is a glucocorticoid used as an anti-inflammatory and immunosuppressant drug. No official methods are available for DFZ determination in pharmaceutical formulations. The objective of this study was to develop, validate and compare spectrophotometric (UV and colorimetric) and high-performance liquid chromatography (HPLC) methods, for the quantitative determination of DFZ in tablets and oral suspension. For the UV method, ethanol was used as the solvent, with detection at 244 nm. The colorimetric method was based on the redox reaction with blue tetrazolium in alkaline medium, with detection at 524 nm. The method by HPLC was carried out using a C18 column, mobile phase consisting of acetonitrile:water (80:20, v/v) with a flow rate of 1.0 mL...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deflazacort/quantitative determination; High performance liquid chromatography/quantitative analysis; Spectrophotometry/quantitative analysis; Medicines/quantitative analysis.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000200015
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