Thymosin Alpha-1
A thymus peptide that tunes the immune system. Used clinically in many countries.
Best value right now · 5 mg
GS
Good Science
IN STOCKUNTESTED
Per mg17% under the $8.70 median
Vial price5 mg · verified Aug 21
Avg per mg · 5 mg
$12.90−44.6%
Ranged $12.90 – $23.27 across 38 vendorsCompare 10 vendors · 5 mg
VendorStock
10
Behemoth LabzUNTESTED · OUT
$16.97$84.86
Showing 8 of 10 vendors · 2 more from $8.00/mg
Thymosin Alpha-1 prices verified Aug 21, 2026
$7.20/mgGood Science · $36.00
Buy best pricePrice movement · 30 days
−11.4%median per mg, all sizes
Cheapest ever recorded: $1.70/mg on Aug 19. Today is 129.8% above that low.See our top-ranked Thymosin Alpha-1 vendors
Ranked by Finnrick trust score, independent lab testing, and price.
Compare Thymosin Alpha-1 head-to-head
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Quick Summary
An immune-boosting peptide approved in 35+ countries for hepatitis and cancer support — one of the most clinically studied peptides available. Available from 38 vendors, priced from $37.00 to $200.00.
Research: Studied in over 4,400 patients across controlled clinical trials and approved in 35+ countries as Zadaxin. Holds FDA Orphan Drug status for hepatitis B, liver cancer, and DiGeorge syndrome.
Side effects: Injection site irritation, Rare fever, Fatigue, Muscle aches
Approved internationallyApproved in 35+ countries; FDA Orphan Drug designation
- 37 of 38 vendors currently have it in stock
- Highest-rated vendor: Peptidology (7.6 Finnrick score)
- Most common vial size: 10mg
- Category: Immune / Inflammation — Immune modulators and anti-inflammatory peptides
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