Patent ID: 7927624

Claim:
A multi-layer controlled release tablet, consisting of: (a) one active layer which consists of: (i) 0.05-20% by weight of ropinirole, inclusive of pharmaceutically acceptable salts thereof, (ii) hydrophilic polymeric substances which swell and gel and/or erode upon contact with aqueous liquids, (iii) lipophilic substances, and (iv) 5-50% by weight of adjuvant substances, wherein the weight ratio of the hydrophilic polymeric substances to the lipophilic substances contained in said active layer is in the range of 7:1 to 1:1, and in which said hydrophilic polymeric substances (ii) are contained in a percentage between 30% and 75% of the weight of the active layer, and (b) one or more barrier layers which limit the release surface of the active layer, which barrier layers contain one or more of: hydrophilic polymeric substances which swell and/or gel and/or erode upon contact with aqueous liquids, lipophilic substances and adjuvant substances; which tablet is optionally coated.