SUSTAINED-RELEASE COMPOSITIONS AND METHOD FOR PREPARING SAME

摘要

The invention concerns compositions in the form of microcapsules or implants comprising a biodegradable polymer or copolymer vehicle or mixture of vehicles with logarithmic viscosity number between 0.5 dl/g and 1.6 dl/g in CHCl3 and an active substance or mixture of active substances, said microcapsules or implants being capable of releasing the active substance or mixture of active substances over a prolonged period up to three months or more. These compositions can also comprise an active substance with high specific surface area.