Sustainbolic is a mix of four testosterones combining four different testosterones at 250 mg per ml: Testosterone Propionate 30 mg, Testosterone Phenylpropionate 60 mg, Testosterone Isocaporate 60 mg, Testosterone Decanoate 100 mg.

Sustainbolic is used to promote weight gain following extensive surgery, chronic infection, or severe trauma, and in other cases that result in inadequate weight gain or maintenance. Sustainbolic is also used to decrease muscle loss caused by treatment with corticosteroids and to reduce bone pain associated with osteoporosis.