A Complete Sojourn of Current Trends in Gastro-retentive Drug Delivery System: Recent Advances and Patent Survey

Abstract

Aims and Objectives:: The current work aims to provide a complete sojourn on gastro-retentive drug delivery system (GRDDS) along with formulation methods, polymer selection, and in vitro/ in vivo challenges with finished dosage forms Materials and Methods:: Ideally, a biopharmaceutical-hindered drug has a rapid clearance and erratic bioavailability due to its low aqueous solubility and permeability. Additionally, it also suffers from high first-pass metabolism and pre-systemic gut wall clearance. Gastro-retentive drug delivery systems have become an emerging technology where newer methodologies and scientific approaches have been used to provide the controlled release of drugs and provide a protective mechanism in the stomach. By the virtue of utilizing GRDDS as a dosage form, these formulations increase Gastroretention time (GRT) which prolongs the controlled release of the drug in the dosage form. Results and Discussion:: GRDDS contribute to increased drug bioavailability and targeting at a site of action, which enhances therapeutic action and offers significant patient compliance. Furthermore, the present work also highlighted the critical role of polymers in favoring drug retention across GIT with the mechanism of gastro-retention and recommended concentration ranges. The emerging technology is also highlighted by the approved drug products and patented formulations in the recent decade which is depicted in a justified manner. Conclusion:: GRDDS formulations have demonstrated clinical efficacy, which is supported by a compilation of patents for cutting-edge innovations in dosage forms that can be held in the stomach for an extended period of time.

pH‐responsive polymers for drug delivery: Trends and opportunities

“…To make them easily bioavailable, gastro-retentive drug delivery systems are prepared to limit the drug release at gastric mucosa. 151 Continuous optimization of floating tablets and mucoadhesive films has been under research to localize the release of antibiotics at gastric mucosa for the treatment of diseases like gastritis and Helicobacter pylori infections. 152 Like verapamil, hydrochloride, and para-aminobenzoic acid, which have a narrow absorption window throughout the gastrointestinal tract and are poorly absorbed in intestinal pH, offer a compelling premise for developing pH-responsive formulations of such drugs.…”