NEW Injectable Biodegradable microspheres, SUITABLE FOR INCLUSION IN A DRUG, PROCESS FOR THE PREPARATION OF THIS NEW microspheres and injectable suspensions, containing them.

摘要

Biodegradable microspheres contain a lactic acid and glycolic acid copolymer and an anti-oestrogen or anti-progestomimetic steroid. The microspheres can be formulated with an aqueous or oily vehicle to form an injectable suspension useful as a medicament. With such a medicament the release period of active ingredient can be from about 1 to about 3 months.