Performance & Grey-Market Pharma
GW501516 (Cardarine)
Street names: Cardarine, GW-1516, Endurobol
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- PPARδ agonist (NOT a SARM, despite being sold with them) — shifts metabolism toward fat oxidation; famous for endurance claims
- Never approved: development was ABANDONED after rodent studies showed rapid cancer growth at multiple sites
⚠Key risks
- The cancer signal ended formal development — users are self-experimenting with an abandoned drug
- Sold alongside SARMs in stacks, multiplying unknowns
- Reported liver enzyme elevations and headache at grey-market doses
- WADA-banned since 2009; routinely detected in tested athletes
✚Overdose signs
- No classic acute overdose — chronic concerns dominate
- Headache, BP changes
- Liver enzyme elevation
Category comparison — Performance & Grey-Market Pharma
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| GW501516 (Cardarine) | Not approved; WADA-prohibited; unscheduled | The cancer signal ended formal development — users are self-experimenting with an abandoned drug; Sold alongside SARMs in stacks, multiplying unknowns | ~$30–60 per bottle grey market |
| AICAR (Acadesine) | Unscheduled | No human safety data — cancer-risk flags in cell studies; Sold as research chemical, zero quality control | ~$50–$150 per gram |
| Clenbuterol HCl | Not approved for human use | Racing heart, arrhythmia, tremors; Overdose: dangerous potassium shifts, cardiac events | ~$0.50–$2 per 40 mcg tablet |
| 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 |
| Liraglutide (Saxenda) | Rx-only — not a controlled drug | Sold grey-market at huge markups with counterfeit/refilled pens; Nausea, pancreatitis risk | ~$200–$500 per pen grey-market |
| Naltrexone–Bupropion (Contrave) | Rx-only — not controlled | Bupropion lowers seizure threshold; Misuse for stimulant-like effect is possible but weak | ~$1–$4 per tablet grey-market |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does GW501516 (Cardarine) look like?
White powder, liquid bottles, capsules from grey-market 'endurance' vendors
What are the signs of a GW501516 (Cardarine) overdose?
No classic acute overdose — chronic concerns dominate; Headache, BP changes; Liver enzyme elevation Call emergency services immediately.
How addictive is it?
The cancer signal ended formal development — users are self-experimenting with an abandoned drug Dependence can develop with regular use.