Preparation and in-vitro Evaluation of Ranitidine Mucoadhesive Microspheres for Prolonged Gastric Retention Journal title: Journal of Pharmaceutical Research International Authors: K. Vijayabhaskar, Kambham Venkateswarlu, S. B. Thirumalesh Naik, R. Kiran Jyothi, G. Nethra Vani, K.... Subject(s):