Testosterone propionate is a widely used injectable form of the main male androgen testosterone. The added propionate ester slows down the rate of testosterone release from the injection site, but only for a few days. Therefore, testosterone propionate acts much faster than other testosterone esters, such as cypionate or enanthate, and requires more frequent dosing. According to most, testosterone propionate is an older and cruder form of injectable testosterone that has been superseded by slower-acting and more convenient esters developed after it. However, those who are not concerned about a frequent schedule of injections find testosterone propionate no less acceptable. Like injectable testosterone, it is a powerful drug for mass gain, capable of providing a rapid increase in muscle mass and strength. Testosterone propionate is a modified form of testosterone in which a carboxylic acid ester (propionic acid) is attached to the 17-beta-hydroxyl group. The half-life of testosterone propionate is approximately two days after injection.
COMPOSITION
100 mg/ml Testosterone Propionate U.S.P. (10 ml VIAL)
SIDE EFFECTS
Testosterone is easily aromatized in the body to estradiol (estrogen). The enzyme aromatase (estrogen synthetase) is responsible for this testosterone metabolism. Elevated estrogen levels can cause side effects such as increased water retention, increased fat mass, and gynecomastia. Elevated testosterone can cause androgenic side effects, including oily skin, acne, and body/facial hair growth. Men with a genetic predisposition to hair loss (androgenetic alopecia) may notice accelerated baldness. Testosterone propionate is often considered a painful injection. This is due to the very short carbon chain of the propionic acid ester, which can irritate the tissues at the injection site. Many sensitive people prefer to completely refrain from using this steroid, since their body reacts to it with severe soreness and low-grade fever, which can persist for several days after each injection.
Application
The usual dosage among male athletes is in the range of 50-100 mg per injection, which is given every second or third day. Like other testosterone esters, testosterone propionate is usually used in a weekly cumulative dosage of 200 mg to 400 mg. This level is enough for most users to notice an exceptional increase in muscle mass and strength.