A multi-layer controlled release tablet comprising a matrix comprising hydrophilic polymeric substance and lipophilic substance.

Abstract

A multi-layer controlled release tablet comprising a pharmaceutical tablet of one or more layers, one of which carries a biologically active substance; the formulation of said tablet includes different percentages of hydrophilic and lipophilic polymeric materials, and adjuvant substances. The tablets of the present invention show a release rate which is independent from the amounts of active substance present in the tablet.