Thymosin beta-4, from which TB-500 derives, serves in model organisms as the principal protein buffering the free G-actin pool, making it a key regulator of cell motility
And at 5 mg/mL, you would need 100 units for a 5 mg dose
Expected timeline: Weeks 1-3: Body adaptation, selank anxiolytic effects may be noticeable Weeks 4-6: Reduction in inflammatory markers, possible decrease in minor flare frequency Weeks 7-12: Cumulative benefits in energy, joint comfort, and immune stability This protocol adds KPV for targeted anti-inflammatory action and selank for immune modulation plus stress management
Small molecule nicotinamide N-methyltransferase inhibitor activates senescent muscle stem cells and improves regenerative capacity of aged skeletal muscle. Biochemical Pharmacology , 163, 481-492
Pricing as of March 2026
Here is his honest take on what it does, and what we still don't know