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Steroid

Nandrolone

Deca-Durabolin, NPP, Deca

19-nortestosterone derivative with high anabolic and low androgenic ratio. Known for collagen synthesis promotion and joint lubrication.

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Half-Life

~15 days (Decanoate ester)

Common Dose

200-600mg/week

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Potential Benefits

  • Significant lean mass gains with less water than testosterone
  • Famous for joint pain relief — helps connective tissue
  • Lower androgenic side effects than testosterone
  • Prescription available in many countries
  • Long track record — used medically since the 1960s

Risks & Downsides

  • Extreme testosterone suppression — HPTA shutdown
  • Prolactin increase — gynecomastia risk
  • Erectile dysfunction if run without testosterone ('Deca Dick')
  • Very long half-life — slow to clear if issues arise
  • Schedule III controlled substance
Risk level
Evidence
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Educational use only: The information on this page is not medical advice. Many compounds discussed on The Stack Index are investigational substances or research chemicals that are not FDA approved for human use.

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