Shop › TB-500 5Mg Image 1 of 1 TB-500 5Mg $45.00 TB-500 is the synthetic version of a naturally occurring protein called Thymosin Beta-4 (TB4) ⁕Add BPC_157 and You get (Wolverine Stack)Research Use Only - Not For Human Use Quantity: Purchase Added! TB-500 is the synthetic version of a naturally occurring protein called Thymosin Beta-4 (TB4) ⁕Add BPC_157 and You get (Wolverine Stack)Research Use Only - Not For Human Use −20 °C long-term; store desiccated and protected from light.