PULSATILE RELEASE COMPOSITION OF THERAPEUTIC AGENT

摘要

A pulsatile release composition which releases the content rapidly after a predetermined lag time comprising a drug containing a core, coated with a pH sensitive graft copolymer. The coating suppresses the drug release at acidic pH prevalent in the stomach and releases it either immediately or after a lag time in the intestinal region. Combinations of multiple numbers of coated and uncoated units provide a sequential pulsatile release of same or different therapeutic agents.