All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Improvement of dissolution rate and efficiency of nifedipine by solid dispersion in PVP-MCC and HPC-MCC.

Author(s): K PR Chowdary, K VRNS Ramesh
Dept. of Pharmaceutical Sciences, Andhra University, Visakhapatnam-530 003

Correspondence Address:
K PR Chowdary Dept. of Pharmaceutical Sciences, Andhra University, Visakhapatnam-530 003

Solid dispersin of nifedipine in combined carriers, PVP-MCC and HPC-MCC has markedly enhanced the dissolution rate and efficiency of nifedipine. About 30-37 fold increase in the dissolution rate was observed with these dispersions. The enhanced dissolution rate was due to (i) the conversion of nifedipine into amorphous form and (ii) the enhancing effect of PVP and HPC on the solubility of nifedipine. Dissolution of nifedipine from these dispersions obeyed Hixson-Crowell's cube root dissolution rate equation.