EXTENDED RELEASE VENLAFAXINE COMPOSITIONS

摘要

The invention relates to extended release pharmaceutical compositions of venlafaxine or pharmaceutically acceptable salts. More particularly this invention relates to a pharmaceutical composition having a core comprising venlafaxine and a coating thereupon. The coating utilizes at least one water insoluble polymer and at least one polymer having pH dependent solubility to delay and modulate the release of the drug in an extended manner.