Controlled release pharmaceutical tablet having lenticular form
AssigneeEkita Investments N.V.
InventorsUbaldo Conte, Aldo La Manna, Lauretta Maggi
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Abstract
Controlled release pharmaceutical tablet having a lenticular form consisting of three layers of which the central one or core (a) contains the active principle and the two outer layers or barriers (b) and (c) comprise gellable and/or erodible polymeric material, said barrier layers being equal or different among themselves for composition and/or thickness, while the central layer has a limited external annular surface exposed to the dissolution medium, through which the active principle is released.
Claims6
A controlled release pharmaceutical tablet, having a lenticular form consisting of the 3 following over-imposed layers:
- a central layer or core (a) comprising an active principle,
- 2external barrier layers (b) and (c) respectively upon and under said core (a) limiting the active principle release, each barrier (b) and (c) comprising a gellable and/or erodible polymeric material,
- wherein said barrier layers (b) and (c) have the same or different composition and leave exposed only the lateral surface of the core (a), said exposed lateral surface ranging from 5 to 35% of the total tablet surface.
Dependencies are inferred from the claim text.