FORMULATION AND EVALUATION OF SUSTAINED RELEASE DOSAGE FORM OF NIFEDIPINE HYDROCHLORIDE USING MULTI-UNIT CHITOSAN TREATED ALGINATE Journal title: International Journal of Pharmaceutical and Biological Research Authors: Soumik Ghosh* , Nansri Saha Ghosh , Subal Debnath , Raja Chakraborty , G. Ganesh kumar , Saikat Sen Subject(s):