Comparison of dissolution profiles of Ibuprofen pellets

• Autor(a) principal: Costa, F. O.
• Data de Publicação: 2003
• Outros Autores: Sousa, J. J. S., Pais, A. A. C. C., Formosinho, S. J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/5781; https://doi.org/10.1016/S0168-3659(03)00033-6
• topic: Dissolution profiles comparison; Model dependent methods; Model independent methods; Mean dissolution times; Fit factors; Correlation coefficients

In this work we use both model dependent and independent techniques to assess the difference between dissolution profiles in which ibuprofen, in the form of uncoated pellets, is used as a model drug. The choice of a proper regression function, the relevance of the estimated parameters and the influence of the choice of dissolution points in the assessment of differences is discussed. The results obtained via mean dissolution times (MDT) and fit-factors (f1 and f2) are also discussed and a non-quantitative method based on profiles correlation with graphical representation (concentration vs. concentration and rate vs. rate) presented. The tested methods discriminate similarly between curves, although not in all cases, but those based on modeling, MDT and fit-factors have shown to be less informative than the correlation approach.