Best Thymosin Alpha-1 Vendors in 2026

Polaris Peptides is our #1 pick for Thymosin Alpha-1, with a Finnrick trust score of 7.3/10. Across 36 tracked vendors, prices range from $37.00 to $200.00. Rankings combine independent purity testing data, vendor trust scores, pricing, and stock availability. We never accept payment for placement.

Cheapest per mg

$4.00/mgat Welli Labs

Highest trust score

Peptidology(7.6/10)

In stock now

38 products across 36 vendors

Last verified

Aug 8, 2026

How we rank vendors

Our composite score weighs Finnrick blind-testing trust scores (62%), price competitiveness (25%), and stock availability (13%). Vendors without Finnrick data are sorted by price below scored vendors. We never accept payment for rankings. Learn more.