What is TB-500? The recovery peptide for active and aging dogs

If you know BPC-157, you may have seen TB-500 mentioned alongside it. The two are often paired — and for good reason. They work through complementary mechanisms, and together they form the core of Rover Inject, the ready-to-use formula at the heart of the Wolverine Stack.

But TB-500 deserves its own introduction.

The basics

TB-500 is a synthetic version of Thymosin Beta-4, a naturally occurring 43-amino-acid protein found in virtually every cell in the body. It plays a central role in how cells organize, migrate, and respond to damage — making it a subject of significant interest in tissue health research.

The key mechanism researchers have focused on: TB-500 upregulates actin, a protein critical for cell motility and structure. When tissue is stressed or damaged, actin-based signaling drives the organized cellular response that underlies normal recovery. Thymosin Beta-4 is believed to potentiate this process.

What the research shows

The body of research on Thymosin Beta-4 and its synthetic analogs spans decades and includes studies in cardiac tissue, skeletal muscle, tendon, corneal tissue, and wound healing.

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.