Trenbolone acetate (TBA), an androgenic/anabolic steroid (AA), is a potent agonist of androgen receptors and has been extensively used as a growth promoter. TBA is a progestin and does not convert to estrogens.

The effects of TBA are increased weight gain, improved food conversion efficiency, decreased muscle RNA and DNA concentrations, and decreased free cathepsin D activity in muscle. The half-life of trenbolone acetate in circulation is one day.

Effective adult dose (male): up to 150mg per day by intramuscular injectionTherapy with trenbolone acetate may decrease thyroxine-binding globulin resulting in decreased total T4 serum levels and increased resin uptake of T3 and T4. Free thyroid hormone levels remain unchanged. Increased creatine and creatinine excretion, increased serum levels of creatinine phosphokinase.

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