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There is no legitimate non-medical dose. Nandrolone is a prescription-only, DEA Schedule III controlled substance; this library does NOT provide a body-composition or performance dosing protocol. For context only: historic FDA-labeled use for the anemia of CKD was clinician-directed intramuscular nandrolone decanoate, and the supervised trials used 100 mg/week (women) to 200 mg/week (dialysis), 150 mg every 2 weeks (HIV men), and 100–200 mg/week in dialysis — all clinician-supervised with monitoring. That is not an endorsement of self-administration, and the renal-anemia indication has largely been replaced by erythropoietin.

Any time

Prescription intramuscular nandrolone decanoate (Deca-Durabolin) — clinician-directed, supervised catabolic-illness/anemia indications only

• Anyone seeking it for body composition, performance or anti-aging without a prescription — a DEA Schedule III controlled substance; possession/use without an Rx is illegal, and it is not a dietary supplement
• Known or suspected prostate or male breast carcinoma; hypercalcemia
• Pregnancy and breastfeeding — androgenic, causes fetal virilization (former FDA pregnancy category X)

• Warfarin / oral anticoagulants
• Insulin / oral hypoglycemics
• Other anabolic steroids / testosterone / SARMs