Multiple unit effervescent dosage form

摘要

The present invention is related to an effervescent pharmaceutical preparation comprising effervescent excipients and a plurality of individual units comprising a pharmaceutically active compound and optional excipients wherein the units (1) are provided with a floating generating system. The floating generating systems comprises at least two coating layers, one of which is a gas generating layer (2) and the other layer is a barrier layer (3) enclosing the generated gas. Furthermore the invention is related to a process for the manufacture of the dosage forms, and their use in medicine.