Gastroretentive dosage forms: A review with special emphasis on floating drug delivery systems

• Published in: Drug delivery Vol. 18; no. 2; pp. 97 - 110
• Main Authors: Pawar, Vivek K., Kansal, Shaswat, Garg, Garima, Awasthi, Rajendra, Singodia, Deepak, Kulkarni, Giriraj T.
• Format: Journal Article
• Language: English
• Published: England Informa Healthcare 01.02.2011; Taylor & Francis
• Subjects: Administration, Oral; Animals; Chemistry, Pharmaceutical - methods; Delayed-Action Preparations - chemistry; Delayed-Action Preparations - pharmacokinetics; dual working systems; expandable systems; floating drug delivery systems; Gastric Emptying - physiology; Gastroretentive drug delivery systems; Humans; magnetic systems; mucoadhesive systems; Stomach - metabolism; superporous systems
• ISSN: 1071-7544; 1521-0464
• DOI: 10.3109/10717544.2010.520354

In the present era, gastroretentive dosage forms (GRDF) receive great attention because they can improve the performance of controlled release systems. An optimum GRDF system can be defined as a system which retains in the stomach for a sufficient time interval against all the physiological barriers, releases active moiety in a controlled manner, and finally is easily metabolized in the body. Physiological barriers like gastric motility and gastric retention time (GRT) act as obstacles in developing an efficient GRDF. Gastroretention can be achieved by developing different systems like high density systems, floating drug delivery systems (FDDS), mucoadhesive systems, expandable systems, superporous systems, and magnetic systems. All these systems have their own merits and demerits. This review focused on the various aspects useful in development of GRDF including the current trends and advancements.