TB-500 / Thymosin Beta-4 2 mg vial
Prices from 5 vendors, and how much to draw for the commonly cited doses.
Read the regulatory status before you compare prices.
Human trials of full-length thymosin beta-4 were run for wound and eye conditions and were generally well tolerated, but TB-500 as sold is a fragment, not the same molecule, and has no trial record of its own. On July 23, 2026, an FDA advisory committee voted 8 to 6 with one abstention to recommend adding TB-500 to the list of substances pharmacies may compound, for wound healing. The FDA's own scientific reviewers had advised against it. The vote is advice, not a decision, and compounding TB-500 is still not legal today.
What a 2 mg vial costs
Every vendor we track that lists this exact size, cheapest first. Sort order is price only; affiliate status never changes it.
Median $14.98, or $14.98 per mg, across the 5 vendors with an exact, in-stock price.
Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named
- Blue Sky PeptideThymosin Beta 4 (TB500) 2mg$21.57$35.95
- Apex Peptide SupplyTB-500$24.99
- Swiss ChemsTB-500 (Thymosin Beta-4)$29.95
- Peptide ProsTB-500 2mg$37.25$47.99
- Fusion PeptidesTB-500$72.89
| Vendor | Size | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| Blue Sky Peptide Thymosin Beta 4 (TB500) 2mg | 2 mg | $21.57$35.95 | $10.79 | in stock | Sep 12, 2026 | View |
| Apex Peptide Supply TB-500 | 2 mg | $24.99 | $12.50 | in stock | Sep 12, 2026 | View |
| Swiss Chems TB-500 (Thymosin Beta-4) | 2 mg | $29.95 | $14.98 | in stock | Sep 12, 2026 | View |
| Peptide Pros TB-500 2mg | 2 mg | $37.25$47.99 | $18.63 | in stock | Aug 22, 2026 | View |
| Fusion Peptides TB-500 | 2 mg | $72.89 | $36.45 | in stock | Sep 4, 2026 | View |
How to mix a 2 mg vial
Find the column for the amount of water you added to the vial. The number is how far to draw on a U-100 insulin syringe, where 100 units is 1 mL. This is arithmetic on the label, not a recommended dose.
How to read an insulin syringe · How much water to add
| Dose | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 2 mg | 100.0 units 1.0 doses/vial | Over 100 units: will not fit one U-100 syringe | Over 100 units: will not fit one U-100 syringe |
| 5 mg | Over 100 units: will not fit one U-100 syringe | Over 100 units: will not fit one U-100 syringe | Over 100 units: will not fit one U-100 syringe |
Printed on the vial.
iPeptide Decoding does not recommend a dose. Enter the amount your clinician gave you, or pick a value from the reference range to model.
Same dose, different draw. Pick whichever is easiest to measure.
U-100 insulin syringe (1 mL = 100 units). Draw to the teal line.
Multi-vendor comparison is a Pro feature.
Daily is 7. Twice weekly is 2.