Testosterone propionate is a commonly manufactured, oil-based injectable testosterone compound. The added propionate ester will slow the rate in which the steroid is released from the injection site, but only for a few days. Testosterone propionate is therefore comparatively much faster acting than other testosterone esters such as cypionate or enanthate, and requires a much more frequent dosing schedule.
For use as an aid in the treatment of androgenic hormone deficiency in castrated race horses. It is also used to treat geldings showing signs of muscle weakness, poor appetite and lack of competitive spirit. Mares showing excessive estrus have been successfully treated.