Formulation of Gastroretentive Floating Tablets, sustained release tablets is the area of research from long time. Most of the time material used for formulation is either synthetic or semi-synthetic polymers. The preparation and cost of these polymers have always been problem for the formulators. Thus, more emphasis was given on the use of natural materials or combination of their with synthetic or semisynthetic for sustaining the release. The easy availability and low cost are the main advantages of these natural polymers. Also, the biodegradability of natural polymers gives an extra...