abstract |
(57) [Summary]nSUMMARY OF THE INVENTION The present invention relates to a gastroretentive oral dosage form, which is a porous matrix structure, comprising at least one drug, a gas generating component, and optionally a drug-accessible auxiliary component. The drug composition is provided in the form of pellets (single or double unit), beads, granules or capsules, and selectively releases the drug over a long period of time in the stomach and upper small intestine. |