BPC-157 vs TB-500
These are often mentioned together but are unrelated molecules. BPC-157 is a 15-residue peptide derived from a gastric-juice protein. TB-500 is a fragment of thymosin beta-4, an actin-regulating protein.
15-amino-acid peptide studied in cytoprotection models
Choose BPC-157 if
- ✓ You are working on cytoprotection or gastric models
- ✓ You want the compound with the larger preclinical literature
Synthetic fragment of thymosin beta-4
Choose TB-500 if
- ✓ Your question is about actin regulation or cell migration
- ✓ You are comparing against full-length thymosin β4 work
Side-by-side specification
| Compare | BPC-157 15-amino-acid peptide studied in cytoprotection models | TB-500 Synthetic fragment of thymosin beta-4 |
|---|---|---|
| Class | Synthetic pentadecapeptide | Thymosin beta-4 fragment |
| Research area | Repair | Repair |
| Receptor targets | Not fully defined | Actin regulation (G-actin binding) |
| Length | 15 amino acids | Fragment (≈ 7 residues in the commonly cited form); full-length thymosin β4 is 43 |
| Molecular mass | ≈ 1.42 kDa | Varies by definition (full-length thymosin β4 ≈ 4.96 kDa) |
| Origin | Synthetic, derived from a gastric-juice protein sequence | Synthetic fragment of a human protein |
| Evidence level | 2/5 Mostly animal and in vitro | 1/5 Limited, preclinical or single-group |
| Regulatory status | Not approved | Not approved |
| Nordapep from | Not listed | Not listed |
| Best price per mg | Not listed | Not listed |
| View BPC-157 at Nordapep → | View TB-500 at Nordapep → |
What separates them
Both have mostly preclinical evidence. BPC-157 has the larger published literature; TB-500 has an extra identity problem because suppliers use the name for different constructs, so mass-spectrometry data matter.
Read the full guides for BPC-157 and TB-500, or add a third compound in the comparison tool.
FAQ
Why are they often paired?
They are studied in overlapping repair models through different mechanisms. Nordapep offers them as the Recovery & Repair Stack.
Are BPC-157 and TB-500 approved medicines?
BPC-157: Not approved. TB-500: Not approved. Research-grade material of either is not a medicine and is supplied for in vitro research only.
Where can I buy BPC-157 and TB-500?
Nordapep lists compounds with a Certificate of Analysis matched to the batch reference. Check each compound page for current availability.
More comparisons
Where to buy
Why we send researchers to Nordapep
Comparing compounds is only half the job. The other half is knowing the vial contains what the label says. Nordapep publishes batch documentation for every compound it sells.
Browse the Nordapep catalogue →Each batch reference on the label matches its CoA, so you can check what is in the vial.
Enter the batch reference from your vial into Nordapep's batch-verification tool.
Purity is reported by RP-HPLC, the standard method for peptides of this size.
Bundled stacks for common comparisons, plus tiered pricing for volume orders.