Performance & Grey-Market Pharma
Ketotifen (Zaditor/Astafen)
Street names: Zaditor, Astafen, Ketasma
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Antihistamine with mast-cell stabilizing effect
- Bodybuilding use: paired with clenbuterol to keep beta-receptors responsive
⚠Key risks
- Drowsiness (the main side)
- Weight gain on longer use
- The 'ketotifen + clen' stack adds antihistamine sedation to stimulant load — poor combination for heart/alertness
✚Overdose signs
- Sedation, confusion
- Racing heart when stacked with stimulants
Category comparison — Performance & Grey-Market Pharma
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Ketotifen (Zaditor/Astafen) | OTC eye drops | Drowsiness (the main side); Weight gain on longer use | ~$0.10–$0.50 per 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 |
| 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.
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.
KetasmaAsthafen
?Frequently asked questions
What does Ketotifen (Zaditor/Astafen) look like?
1 mg tablets; 0.025% eye drops
What are the signs of a Ketotifen (Zaditor/Astafen) overdose?
Sedation, confusion; Racing heart when stacked with stimulants Call emergency services immediately.
How addictive is it?
Drowsiness (the main side) Dependence can develop with regular use.
🔗Sources & further reading
Facts on this page are compiled from these primary sources. External links open in a new tab.