TB-500 / Thymosin Beta-4 20 mg vial price
TB-500 / Thymosin Beta-4 20 mg vials are listed by 3 vendors. Prices run from $75.00 to $125.00, with a median of $99.00, across the 3 showing an exact in-stock price. Last read Oct 4, 2026. This page also shows 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 20 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 $99.00 a vial, or $4.95 per mg, across the 3 vendors with an exact, in-stock price.
Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named
- PeakForce LabsTB500 – 20mg Vial$75.00
- Skye PeptidesTB-500 Fragment (17-23)$99.00
- Paramount PeptidesTB-500 20mg$125.00
| Vendor | Size | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| PeakForce Labs TB500 – 20mg Vial | 20 mg | $75.00 | $3.75 | in stock | Oct 4, 2026 | View |
| Skye Peptides TB-500 Fragment (17-23) | 20 mg | $99.00 | $4.95 | in stock | Oct 4, 2026 | View |
| Paramount Peptides TB-500 20mg | 20 mg | $125.00 | $6.25 | in stock | Oct 4, 2026 | View |
How to mix a 20 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 | 10.0 units 10.0 doses/vial | 20.0 units 10.0 doses/vial | 30.0 units 10.0 doses/vial |
| 2.5 mg | 12.5 units 8.0 doses/vial | 25.0 units 8.0 doses/vial | 37.5 units 8.0 doses/vial |
Calculating for
TB-500 / Thymosin Beta-4
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.
Multi-vendor comparison is a Pro feature.
Daily is 7. Twice weekly is 2.