Abstract | INTRODUCTION: OBJECTIVE: The present study focused on the development and validation of a dissolution test for lodenafil carbonate tablets, using a simulated absorption profile based on in vivo data. METHODS: The appropriate conditions were determined after testing sink conditions. Different conditions as medium, surfactant concentration and rotation speed were evaluated. The percentage of dose absorbed was calculated by deconvolution, using the Wagner-Nelson method. RESULTS: According to the obtained results, the use of 0.1 M HCl + 1.5% SLS (900 mL, at 37 + 0.5 °C) as the dissolution medium, paddles at 25 rpm were considered adequate. The samples were quantified by UV spectroscopy at 295 nm and the validation was performed according to international guidelines. The method showed specificity, linearity, accuracy and precision, within the acceptable range. Kinetics of drug release was better described by the first-order model. CONCLUSION:
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Authors | Cristiane Franco Codevilla, Tamara dos Santos Castilhos, Carolina Araújo Cirne, Pedro Eduardo Froehlich, Ana Maria Bergold |
Journal | Drug development and industrial pharmacy
(Drug Dev Ind Pharm)
Vol. 40
Issue 4
Pg. 488-93
(Apr 2014)
ISSN: 1520-5762 [Electronic] England |
PMID | 23614829
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Validation Study)
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Chemical References |
- Carbonates
- Phosphodiesterase 5 Inhibitors
- Piperazines
- Pyrimidines
- Surface-Active Agents
- Tablets
- lodenafil carbonate
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Topics |
- Carbonates
(chemistry)
- Erectile Dysfunction
(drug therapy)
- Humans
- Male
- Models, Theoretical
- Phosphodiesterase 5 Inhibitors
(chemistry)
- Piperazines
(chemistry)
- Pyrimidines
(chemistry)
- Sensitivity and Specificity
- Solubility
- Spectrophotometry, Ultraviolet
- Surface-Active Agents
(chemistry)
- Tablets
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