Steroids & Anabolics
Nandrolone (Deca-Durabolin / NPP)
Street names: Deca, NPP, Deca-Durabolin
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Slow, quality mass gains
- Joint lubrication effect (popular with older lifters)
- Mild estrogen conversion
⚠Key risks
- 'Deca dick' — prolactin-driven sexual dysfunction that can persist
- Suppression is deep and long (up to a year for full recovery)
- Cardiovascular strain with long cycles
- Counterfeit vials extremely common
✚Overdose signs
- No acute overdose
- Severe hypertension
- Mood depression, libido collapse
📋Quick facts
Also known asDeca, NPP, Deca-Durabolin
CategorySteroids & Anabolics
Schedule / classSchedule III (US); Class C (UK)
AppearanceYellowish oil vials (decanoate long-ester, 'Deca'; phenylpropionate short-ester, 'NPP')
Street price~$40–$75 per 10 mL vial grey-market
Legal statusRx-only, Schedule III; legitimate medical use exists but grey market dominates supply
Last updated2026-09-16
Sources: FDA, DEA
Category comparison — Steroids & Anabolics
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Nandrolone (Deca-Durabolin / NPP) | Schedule III | 'Deca dick' — prolactin-driven sexual dysfunction that can persist; Suppression is deep and long (up to a year for full recovery) | ~$40–$75 per 10 mL vial grey-market |
| Testosterone (injections & gels) | Schedule III | Shutdown of natural testosterone production (needs PCT); Cardiovascular strain, raised blood pressure, lipid damage | ~$40–$80 per 10 mL vial grey-market |
| Trenbolone | Not approved for humans anywhere | Harsh cardiovascular and lipid impact — among the most damaging AAS; 'Tren cough' — acute pulmonary reaction on injection | ~$50–$90 per 10 mL vial grey-market |
| Methandienone (Dianabol) | Schedule III | Liver-toxic (17-alpha-alkylated) — hepatitis risk at high doses; Estrogen conversion: gynecomastia, bloating | ~$30–$60 per 100 tablets grey-market |
| Oxandrolone (Anavar) | Schedule III | Hepatotoxicity despite 'mild' reputation; HDL cholesterol crash | ~$1–$3 per 10 mg tablet grey-market |
| Stanozolol (Winstrol) | Schedule III | Severe joint pain (dries out connective tissue); Liver-toxic oral form; injectable form still hepatotoxic | ~$40–$70 per 100 tablets grey-market |
Street prices are regional estimates. Potency and cuts vary constantly.
RxBrand names on the grey market
These brands are sold as this compound. Same molecule, different label and supply chain — quality varies enormously between them.
DecaNandroxylNPPDynabol
?Frequently asked questions
What does Nandrolone (Deca-Durabolin / NPP) look like?
Yellowish oil vials (decanoate long-ester, 'Deca'; phenylpropionate short-ester, 'NPP')
What are the signs of a Nandrolone (Deca-Durabolin / NPP) overdose?
No acute overdose; Severe hypertension; Mood depression, libido collapse Call emergency services immediately.
How addictive is it?
'Deca dick' — prolactin-driven sexual dysfunction that can persist Dependence can develop with regular use.