This type of testosterone contains no ester and is known among bodybuilders as a “potent mass agent.” This water-based testosterone is said to be the most powerful injectable steroid available, producing very quick muscle mass and strength. This form of testosterone requires frequent intramuscular injections, as it remains in the body a limited number of hours. To treat low testosterone, a dose of 25-50 mg is administered 2-3 times per week. The injection is often very painful, and experience has shown that the risks outweigh the benefits. This particular form does not come highly recommended.