TB-500 Peptide: Benefits, Dosage & Research Overview
TB-500 Peptide: Benefits, Dosage & Research Overview
What TB-500 is, what the published research says about it, and how it’s referenced in laboratory dosing literature. For research use only.
What is TB-500?
TB-500 is a synthetic fragment of thymosin beta-4, a naturally occurring protein involved in actin regulation — the cellular machinery responsible for cell shape, movement, and migration. Because thymosin beta-4 is a relatively large protein, TB-500 was developed as a smaller, stable fragment that retains the region of the molecule believed to be responsible for its most-studied biological activity.
What the research covers
Published research on TB-500 and its parent molecule, thymosin beta-4, has focused primarily on cell migration, angiogenesis (new blood vessel formation), and models of soft-tissue and wound repair. Researchers studying TB-500 are typically investigating its role in systemic tissue-repair signaling, in contrast to more localized-action peptides like BPC-157. This systemic mechanism is one reason TB-500 and BPC-157 are frequently studied together, and why a combined formulation like Klow80 Blend groups them alongside GHK-Cu and KPV rather than selling each in isolation.
How TB-500 dosing is referenced in the literature
There is no FDA-approved dosing schedule for TB-500 — it is not an approved drug. Research literature and community-reported protocols generally describe a loading phase (a higher-frequency period, often the first several weeks) followed by a lower-frequency maintenance phase. Because TB-500 is understood to act systemically rather than at a localized injection site, exact injection location is considered less critical in the literature than it is for BPC-157. Reported total weekly reference amounts vary considerably between sources and are not standardized — this is not a recommendation, and any figures encountered elsewhere should be treated as a description of what’s been reported, not instructions.
Reconstitution and storage
TB-500 ships lyophilized and should be stored at −20°C prior to reconstitution. Reconstitute with bacteriostatic water, added gently down the vial wall, and swirl (don’t shake) to dissolve. After reconstitution, store at 2–8°C and use within 28 days to preserve peptide integrity.
TB-500 as part of a four-peptide blend
Klow80 Blend combines TB-500 with BPC-157, GHK-Cu, and KPV at 80mg total peptide content per vial, HPLC-verified to ≥99% purity with an independent Certificate of Analysis per batch. Researchers who want TB-500 alongside its most commonly co-studied peptides in a single verified vial, rather than sourcing four separate listings, use this blend for that reason.