TB-500 / Thymosin Beta-4 5 mg vial
Prices from 28 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 5 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 $11.60, or $11.60 per mg, across the 24 vendors with an exact, in-stock price.
Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named
| Vendor | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|
| Pure Health Peptides | $25.00 | $5.00 | in stock | Sep 12, 2026 | View |
| Swiss Chems | $35.16$38.95 | $7.03 | in stock | Sep 12, 2026 | View |
| Olympus Labs | $39.95 | $7.99 | in stock | Aug 22, 2026 | View |
| Olympus Labs | $39.95 | $7.99 | in stock | Sep 12, 2026 | View |
| Amino Asylum | $39.99 | $8.00 | in stock | Aug 22, 2026 | View |
| Ignite Peptides | $40.00 | $8.00 | out of stock | Sep 12, 2026 | View° |
| Ignite Peptides | $40.00 | $8.00 | in stock | Sep 12, 2026 | View° |
| PeptidesSource | $40.00 | $8.00 | in stock | Aug 23, 2026 | View |
| Fusion Peptides | $42.99 | $8.60 | in stock | Sep 4, 2026 | View |
| Recon Peptides | $46.00 | $9.20 | in stock | Aug 22, 2026 | View |
| Recon Peptides | $46.00 | $9.20 | in stock | Sep 12, 2026 | View |
| Singular Biotech | $49.00 | $9.80 | in stock | Aug 22, 2026 | View |
| Singular Biotech | $49.00$49.99 | $9.80 | in stock | Sep 12, 2026 | View |
| Apex Peptide Supply | $49.99 | $10.00 | in stock | Sep 12, 2026 | View |
| Ascension Peptides | $54.00$60.00 | $10.80 | listed | Aug 22, 2026 | View° |
| Peak Lab Peptides | $54.00 | $10.80 | in stock | Sep 12, 2026 | View° |
| Penguin Peptides | $58.00 | $11.60 | in stock | Sep 4, 2026 | View |
| Paramount Peptides | $60.00 | $12.00 | in stock | Sep 12, 2026 | View |
| Prime Lab Peptides | $60.00$80.00 | $12.00 | in stock | Sep 12, 2026 | View |
| Prime Sciences | $65.00$100.00 | $13.00 | in stock | Aug 22, 2026 | View |
| Pure Tested Peptides | $67.00 | $13.40 | in stock | Sep 12, 2026 | View |
| Sports Technology Labs | $66.99 | $13.40 | in stock | Aug 22, 2026 | View |
| Accelerate Labs | $67.00 | $13.40 | in stock | Sep 12, 2026 | View |
| Eternal Peptides | $69.99 | $14.00 | in stock | Sep 12, 2026 | View |
| Biotech Peptides | $72.00 | $14.40 | in stock | Sep 12, 2026 | View |
| NuScience Peptides | $74.99 | $15.00 | in stock | Sep 12, 2026 | View |
| Oath Research | $80.00 | $16.00 | in stock | Sep 12, 2026 | View |
| Forto Labs | $84.99 | $17.00 | in stock | Sep 12, 2026 | View |
| Swiss Chems | $96.95 | $19.39 | in stock | Sep 12, 2026 | View |
| Cernum Biosciences | $129.99 | $26.00 | out of stock | Sep 12, 2026 | View |
| Core Peptides | $140.00 | $28.00 | in stock | Sep 12, 2026 | View |
| Singular Biotech | $329.99 | $66.00 | in stock | Sep 12, 2026 | View |
| PeakForm Peptides | $40.00starting at | $8.00 | in stock | Aug 24, 2026 | View |
| Validated Peptides | $59.99starting at | $12.00 | in stock | Sep 12, 2026 | View° |
- Ignite Peptides: Stock not shown, left out of the range
- Ascension Peptides: Stock not shown, left out of the range
- Cernum Biosciences: Stock not shown, left out of the range
- PeakForm Peptides: "From" price, left out of the range
- Validated Peptides: "From" price, left out of the range
How to mix a 5 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 | 40.0 units 2.5 doses/vial | 80.0 units 2.5 doses/vial | Over 100 units: will not fit one U-100 syringe |
| 5 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 |
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.