Preparation of transdermal monolithic systems of indapamide by solvent casting method and the use of vegetable oils as permeation enhancer G.
Abstract
the drug in the following order: F3 > F4 > F7 > F5 > F8 > F6 > F1 > F2. Th e various permeation parameters such as fl ux, permeability coeffi cient, enhancement ratio and diff usion rate constants were determined for all the formulations. Th e maximum fl ux of 9.08 × 102 mg/ cm2 h was observed with HPMC monolithic system containing 30% w/w olive oil. A signifi cant improvement of fl ux was observed in
the following order: olive oil > linseed oil > sunfl ower oil > cottonseed oil > coconut oil > castor oil. Further improvement of fl ux was observed, when 30% w/w olive oil was applied directly onto the skin prior to the studies. Th e in vitro release studies revealed that the release was sustained up to 24 h and it follows zero-order kinetics. All the fi lms were found to be stable at 37°C and 45°C with respect to their physical parameters and drug content.
Key words: EC, HPMC, linseed oil, olive oil, permeation enhancers, sunfl ower oil, transdermal
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DOI: https://doi.org/10.22377/ijgp.v2i2.47
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