Peptides & Research Chemicals
Thymosin Alpha-1
Street names: Ta1, Zadaxin
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Immune-modulating peptide — approved for hepatitis B/C and immune support
- Chronic-fatigue and 'immune optimization' grey-market use
⚠Key risks
- Genuine Zadaxin is heavily counterfeited in grey channels
- Injection reactions, transient fatigue
- Immune claims beyond indications are speculative
✚Overdose signs
- No acute overdose
- Injection-site reaction
- Fever, malaise
📋Quick facts
Also known asTa1, Zadaxin
CategoryPeptides & Research Chemicals
Schedule / classRx/approved in ~30 countries (Zadaxin); unscheduled US grey
Appearance1.6 mg vials (pharma) reconstituted; grey versions identical packaging copied
Street price~$20–$50 per vial grey-market (real pharma far more)
Legal statusApproved in many countries; grey US market unregulated
Last updated2026-09-16
Sources: EMA, PubMed
Category comparison — Peptides & Research Chemicals
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Thymosin Alpha-1 | Rx/approved in ~30 countries | Genuine Zadaxin is heavily counterfeited in grey channels; Injection reactions, transient fatigue | ~$20–$50 per vial grey-market |
| Russian Peptide Bioregulators | Mostly unscheduled; Selank/Semax are Rx nasal sprays in Russia/Ukraine | Soviet-era data quality is low — Western replication mostly absent; Grey-market versions far from pharmacy-grade | ~$15–$50 per vial/spray grey-market |
| Bacteriostatic Water | OTC/medical supply — not a drug | NOT for neonates (benzyl alcohol toxicity); Multi-dose vials contaminated by poor technique — the actual infection source in most peptide-user abscesses | ~$5–$15 per vial 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.
Thymosin Alpha-1
?Frequently asked questions
What does Thymosin Alpha-1 look like?
1.6 mg vials (pharma) reconstituted; grey versions identical packaging copied
What are the signs of a Thymosin Alpha-1 overdose?
No acute overdose; Injection-site reaction; Fever, malaise Call emergency services immediately.
How addictive is it?
Genuine Zadaxin is heavily counterfeited in grey channels 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.