What Is TB-500?

TB-500 is the natural partner to BPC-157 in tissue-repair research — the two are studied together so often that they're commonly sold as a blend. On its own, TB-500 traces back to a protein your body already makes.

What is TB-500?

TB-500 is a synthetic peptide based on the active fragment of thymosin beta-4 (TB4) — a naturally occurring protein found throughout the body that's involved in cell repair and migration. "TB-500" refers to the synthetic version of that active region, supplied to researchers as a lyophilized powder.

Is TB-500 the same as thymosin beta-4?

Not quite. TB4 is the full natural protein; TB-500 is a synthetic peptide based on its active region. They're closely related but not identical — a distinction worth knowing when you read the research.

What is it studied for?

In the literature, TB-500 is most associated with tissue repair, cell migration, and recovery pathways in laboratory and animal models. As always, that's research-model context — not a statement about outcomes in people.

BPC-157 and TB-500 are paired so often because they're studied for complementary repair mechanisms.

Why TB-500 is paired with BPC-157

TB-500 and BPC-157 are frequently studied — and sold — as a blend because they're investigated for complementary tissue-repair pathways. They remain two distinct compounds; the pairing is about the combination, not a single ingredient.

How is TB-500 handled in the lab?

• Keep the sealed vial cool, dry, and out of direct light.
• Reconstitute with bacteriostatic water — see how to reconstitute peptides and how much BAC water to use.
• Refrigerate the reconstituted solution, where it stays stable for weeks.

Why purity matters

Confirm what's in the vial. A reputable source includes a Certificate of Analysis (COA) with third-party HPLC purity and mass-spec identity for that batch — here's how to read one.