Controlled release liquid delivery compositions with low initial

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Implant or insert

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A61F 200

Patent

active

061433144

ABSTRACT:
The invention provides a controlled release polymeric composition which includes a base polymer or copolymer, an organic solvent, a polymeric controlled release additive, and a biologically active agent. The polymeric controlled release additive reduces the initial burst of biologically active agent released from the polymeric composition as it is solidifying to form the solid implant. The controlled release additive is preferably a poly(lactide-co-glycolide)/polyethylene glycol block copolymer.

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