Abbott Laboratories Corporation

Kolette M Flood

Steven L Krill

Yihong Qiu

Jay S Trivedi

Sharon L Graham

The present invention provides a tablet for the controlled release of an active agent comprising (a) a matrix layer comprising an active agent embedded in a non-swelling, non-gelling hydrophobic matrix; (b) a first barrier layer laminated to a single face of the matrix layer; and (c) an optional second barrier layer laminated to the opposite face of the matrix layer and oppositely disposed to the first barrier layer; wherein the matrix comprises up to about 80% active agent and from about 5% to about 80% by weight of nonswellable waxes or polymeric material insoluble in aqueous medium, and the first and second barrier layers independently comprise (1) polymeric material exhibiting a high degree of swelling and gelling in aqueous medium or (2) nonswellable wax or polymeric material insoluble in aqueous medium.

Growing community of inventors

Crystal Lake, IL, United States of America

Kolette M Flood