Multipor food protection

摘要

The invention concerns an essentially zero-order controlled-release pharmaceutical tablet comprising a drug-containing tablet core surrounded by a first coating or membrane essentially consisting of a water insoluble polymer having fine water soluble particles randomly distributed therein and a second hydrophilic film coating. The second film coating consists essentially of hydrophilic pharmaceutically acceptable polymers such as a mixture of ethylcellulose and hydroxypropyl methylcellulose that will create a food neutral system allowing the drug to be released in a controlled manner. A method for the preparation of the tablet is disclosed.