| 摘要 |
Sustained release devices have an insoluble polymer and glycerol ester matrix containing an active substance. Preferred devices are solid implants for subcutaneous administration, containing one or more anabolic substances incorporated in the matrix. The implants give sustained release of the anabolic substance especially in farm animals. The anabolic substance is e.g. estradiol, testosterone, progesterone, nandrolone, trembolone etc. The insoluble polymer may be polypropylene, polyethylene, pvc, polystyrene etc, and the ester can be glycerol palmitostearate, stearate or behenate. |
