BPC-157 and TB-500 are sold in four research formats: lyophilized powder in a vial, a spray, a topical gel, and capsules. Each format contains the same peptide; what differs is the physical form of the material, which researchers choose based on their study design. Explicit SARMs lists each peptide on its own and in combined BPC-157 / TB-500 blends.
By the Explicit SARMs Team. Updated October 23, 2026.
What are BPC-157 and TB-500?
BPC-157 is a synthetic 15-amino-acid peptide derived from a fragment of a gastric protein. TB-500 is a synthetic peptide modeled on part of thymosin beta-4, an actin-binding protein. They are often studied together, which is why combined products exist. Both are research compounds and neither is an approved drug.
What is the lyophilized vial format?
A lyophilized vial holds freeze-dried peptide powder. It is the most common format in laboratory research because the amount per vial is fixed and well defined. Options include BPC-157 5mg, BPC-157 10mg, TB-500 5mg, TB-500 10mg and the BPC-157 / TB-500 10mg blend.
What is the spray format?
The spray format supplies the peptide as a ready-made liquid in a spray bottle, so no lab preparation from powder is needed. We list BPC-157 spray, TB-500 spray and a combined BPC-157 / TB-500 spray.
What is the gel format?
The TB-500 / BPC-157 gel supplies both peptides in a gel base. It is used in research designs that call for a semi-solid material rather than a powder or liquid.
What is the capsule format?
Capsules hold a measured amount of peptide in each capsule. Options include BPC-157 capsules (30 count), BPC-157 capsules (60 count), TB-500 capsules and BPC-157 / TB-500 capsules.
How do the formats compare?
| Format | Physical form | Prep from powder needed | Single and blend options |
|---|---|---|---|
| Vial | Lyophilized powder | Yes | Yes |
| Spray | Liquid | No | Yes |
| Gel | Semi-solid | No | Blend |
| Capsules | Fill in capsule | No | Yes |
Should I choose a single peptide or a BPC-157 / TB-500 blend?
Single-peptide products give full control over ratios and let researchers study each compound on its own. Blends combine both in one product under one lot number and one COA. For a wider blend, KLOW adds KPV and GHK-Cu, and our KLOW guide explains the difference from GLOW.
How is each format tested?
Every format is manufactured in the US and tested at three stages: our manufacturer tests the raw ingredient and the material after processing or lyophilization, then Accumark, a third-party lab, independently tests the finished batch on our behalf. The COA for your lot is available on request through our contact page.
Are any of these formats for human use?
No. Every format is sold for laboratory research only. We do not provide usage guidance of any kind.
Where can I see all BPC-157 and TB-500 products?
Browse the BPC-157 and TB-500 collection or the full research peptides collection.
Which format is most common in published research?
Most published laboratory work on BPC-157 and TB-500 uses the peptide prepared from lyophilized powder, because the amount of peptide in a vial is fixed and easy to account for. Ready-made formats such as sprays, gels and capsules exist for research designs that call for those physical forms.
Do the formats contain the same amount of peptide?
No. Each product lists its own amount on the product page and label, measured in milligrams per vial, micrograms per capsule, or per bottle for sprays and gels. Compare the labeled amounts and the COA for each lot rather than assuming the formats are interchangeable.
What is the difference between BPC-157 / TB-500 and KLOW?
The BPC-157 / TB-500 blend combines two peptides. KLOW combines four: BPC-157, TB-500, KPV and GHK-Cu. GLOW combines three: BPC-157, TB-500 and GHK-Cu.
Is TB-500 the same as thymosin beta-4?
Not exactly. Thymosin beta-4 is a 43-amino-acid protein. TB-500 is a synthetic peptide based on a short active region of it, so the two names are related but describe different molecules.
For laboratory research use only. Not for human consumption. Sold by Explicit SARMs solely as reference material for in-vitro and laboratory research by qualified professionals. Not evaluated by the FDA and not intended to diagnose, treat, cure or prevent any disease.