60 страниц. 2012 год. LAP Lambert Academic Publishing For the drug delivery oral drug delivery is most convenient. For getting the maximum effect on the stomach or for particularly stomach targeted drug are must present in stomach for long time. So for these various approaches are available in this research work for gastroretentive drug delivery system. Methods, Advantages, Limitations and Applications for these drug delivery system is describes in this work. I done my best to cover all information. Thank you.