Injectable pharmaceutical composition

摘要

Formulations of programmed-release medicinal products intended for parenteral administration by injection, comprising calibrated solid microspheres (1 to 300 microns) of active substances. Provided in this form, steroids (for example progesterone and 17- beta -estradiol) may constitute injectable contraceptives, and the action of drugs having an approximatively 24 hours lasting effect may be regulated and extended.