| abstract |
Biodegradable drug delivery compositions are proposed, including a triblock copolymer containing polyester and polyethylene glycol and a diblock copolymer containing polyester and polyethylene glycol with a blocked end group, as well as at least one pharmaceutically active principle or hydrophobic active principle, such as medroxyprogesterone acetate, levonorgestrel, cyclosporine, progesterone, or bupivacaine. |