BPC-157 vs TB-500: Differences and the 'Wolverine Stack'
BPC-157 and TB-500 are the two most talked-about research peptides, and they are often paired as the so-called Wolverine stack. Here is how they differ, why they are studied together and how the blend compares with separate vials.
The short version
BPC-157 is a 15-amino-acid fragment of a protein found in gastric juice. TB-500 is based on thymosin beta-4, an actin-binding protein found in almost every cell. They come from unrelated sources and are studied in overlapping research areas, which is why they are so often mentioned together.
Side-by-side comparison
| BPC-157 | TB-500 | |
|---|---|---|
| Parent molecule | Body protection compound (gastric juice) | Thymosin beta-4 |
| Length | 15 amino acids | 43 (full) or 7 (fragment) |
| Best-known property | Stable in stomach acid | Binds actin, drives cell migration |
| Main research models | Gut, tendon, muscle, blood vessels | Cell migration, skin, muscle, heart |
| Evidence base | Mostly rodent studies, one main lab group | Mostly cell and animal studies |
| WADA status | Prohibited | Prohibited |
- Thymosin beta-4 (full TB-500)43
- BPC-15715
- TB-500 fragment7
Why they are studied together
Because the two act through different pathways, researchers interested in tissue repair models often look at them side by side, or together, to see whether the effects overlap or add up. The pairing picked up the nickname "Wolverine stack" online, after the comic-book character known for healing. In Australia, "wolverine stack Australia" is a common search for the pre-mixed blend.
Blend vs separate vials
| Option | Pros | Cons |
|---|---|---|
| BPC-157 + TB-500 blend | One vial to reconstitute and label; fixed ratio every time | Ratio cannot be changed |
| BPC-157 + TB-500 separately | Full control over each amount | Two vials to prepare and track |
Our blend comes in 10mg, 20mg and 30mg vials. If you also want copper peptide in the mix, the GLOW blend adds GHK-Cu, and KLOW adds GHK-Cu and KPV. See GLOW vs KLOW.
Handling and quality
Both are supplied as lyophilised powder and reconstituted with bacteriostatic water; the steps are in our reconstitution guide. For a blend, check the COA lists both peptides with their identities confirmed. Our COA guide shows what to look for.
Further reading
For laboratory research use only. Not for human consumption. Not medical or legal advice.
