Performance & Grey-Market Pharma
YK-11
Street names: YK11, Myostine
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Steroidal SARM / DHT-derivative — marketed with claimed myostatin-inhibition for extreme muscle gain
- Androgenic effects closer to steroids than to ostarine
⚠Key risks
- Chemically closer to a steroid than a SARM — full androgenic side-effect profile
- Liver strain class risk; zero human safety data
- Suppression significant; 'SARM blends' stack 3–4 suppressive compounds
- Most counterfeited SARM: lab tests find other compounds in most YK-11 bottles
✚Overdose signs
- Jaundice
- Androgenic effects: acne, hair shedding, mood aggression
- BP/lipid deterioration
Category comparison — Performance & Grey-Market Pharma
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| YK-11 | Not approved; WADA-prohibited; unscheduled | Chemically closer to a steroid than a SARM — full androgenic side-effect profile; Liver strain class risk; zero human safety data | ~$50–90 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 YK-11 look like?
Liquid or capsule grey-market products; often stacked in 'SARM blends'
What are the signs of a YK-11 overdose?
Jaundice; Androgenic effects: acne, hair shedding, mood aggression; BP/lipid deterioration Call emergency services immediately.
How addictive is it?
Chemically closer to a steroid than a SARM — full androgenic side-effect profile Dependence can develop with regular use.