Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.
Best Thymosin Beta-4 Vendors of 2026
Ranked by Price, Purity, and Reputation
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Quick Comparison
| Rank | Vendor | COA | Score | Doses |
|---|---|---|---|---|
| 1 | Nura Peptide | Yes | 10/10 | |
| 2 | EZ Peptides | Yes | 9/10 |
Bulk Pricing
Per-vendor quantity breaks — pick a vial size to see the bulk price. Must purchase the full pack.
$5.00/mg $2.80/mg · 20% pack discount + 30% with code
$6.80/mg $5.51/mg · 10% pack discount + 10% with code
Thymosin Beta-4 Stacks & Blends
Pre-mixed combinations containing Thymosin Beta-4 — one vial, multiple peptides.
BPC-157 + Thymosin Beta-4
Also contains: BPC-157
Compare More Peptide Vendors
How We Score Vendors
Our scoring is based on three weighted factors:
Price Competitiveness (40%)
Normalized to cost per milligram for fair comparisons across vial sizes.
COA Availability (30%)
Third-party lab testing confirming purity, identity, and absence of contaminants.
Vendor Reputation (30%)
Community feedback, shipping reliability, customer service, and business track record.