Sustanon is a testosterone ester blend intended for intramuscular injection.
Ester Approx. Half-Life (IM) Purpose
Testosterone Propionate 1–2 days Fast onset
Testosterone Phenylpropionate 3–4 days Early sustained release
Testosterone Isocaproate 4–5 days Medium duration
Testosterone Decanoate 7–10 days Long duration
Appearance (pharmaceutical injection)
Clear, oily solution
Typically in sterile glass ampoules
Color: pale yellow to clear
Pharmacological Classification
Androgen
Anabolic steroid
Testosterone replacement hormone
Legitimate Uses
Male hypogonadism (TRT)
Delayed puberty in males
Masculinizing hormone therapy (GAHT)
