Performance & Grey-Market Pharma
Clenbuterol HCl
Street names: Clen, Spiropent
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Bronchodilator → fat loss, stimulant-like energy at higher doses
⚠Key risks
- Racing heart, arrhythmia, tremors
- Overdose: dangerous potassium shifts, cardiac events
- Contaminated meat can cause positive tests
✚Overdose signs
- Severe tremor
- Racing irregular heart
- Chest pain, dizziness
📋Quick facts
Also known asClen, Spiropent
CategoryPerformance & Grey-Market Pharma
Schedule / classNot approved for human use (US); Rx elsewhere
AppearanceWhite 20–40 mcg tablets; veterinary liquid
Street price~$0.50–$2 per 40 mcg tablet (grey market)
Legal statusNot FDA-approved for humans (US); Rx veterinary/Rx human elsewhere; doping-banned
Last updated2026-09-12
Sources: FDA, WADA
Category comparison — Performance & Grey-Market Pharma
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Clenbuterol HCl | Not approved for human use | Racing heart, arrhythmia, tremors; Overdose: dangerous potassium shifts, cardiac events | ~$0.50–$2 per 40 mcg tablet |
| AICAR (Acadesine) | Unscheduled | No human safety data — cancer-risk flags in cell studies; Sold as research chemical, zero quality control | ~$50–$150 per gram |
| Anastrozole (Arimidex) | Rx-only | Bone density loss, joint pain with long-term use; Crash estrogen too low → depression, libido loss | ~$2–$8 per 1 mg tablet |
| Tadalafil (Cialis) | Rx-only — not controlled | Counterfeit ED pills are a major fentanyl/adulterant channel in some regions; Dangerous blood pressure drop with nitrates | ~$2–$15 per tablet |
Street prices are regional estimates. Potency and cuts vary constantly — see our pressed pill guide.
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Profiles are reviewed against NIDA/DEA/EMCDDA sources. See something off? Submit a correction — it goes straight to our editorial queue.