Testosterone is responsible for promoting health and well-being through enhanced libido, energy, immunity, increased fat loss, gaining and maintaining lean muscle mass, preventing Osteoporosis (loss of bone density) and possible protection against heart disease. Trenbolone increases both protein synthesis as well as nitrogen retention in muscle tissue (5). Trenbolone can also bind with the (anti-anabolic) glucocorticoid receptor, thus aiding the muscle building process. Finally, it also has the ability to improve nutrient efficiency and mineral absorption in animals given the drug. Masteron is a powerful anabolic/androgenic steroid derived from DHT that was designed to fight certain forms of breast cancer. It is used by bodybuilders as a bulking and cutting agent, as well as an ancillary drug to combat estrogenic side effects like water-retention. Its toxicity to the liver is very low, although side effects such as acne, hair loss and prostrate enlargement are common. WARNING: if you are going to use a high concentrated drug for the first time, we strongly recommend to inject only ½ ml to check the body reaction and to prevent possible side effects, which can include post injection pain (PIP), high body temperature, lumps, etc.