TB-500 5MG/VIAL (Shipped)free shipping $230 (SDBC) TB-500 is a miracle healing peptide which is a synthetic variation of Thymosin Beta-4, a naturally occurring peptide produced in humans and animals. Thymosin Beta-4 is secreted by the thymus gland during adolescence until the gland begins to atrophy and completely decay, ceasing the production of this amazing hormone. TB-500 has been shown to enhance blood vessel growth, upregulate wound healing, decrease inflammation, and reduce oxidative damage to the heart and central nervous system. Functioning similarly to human growth hormone (HGH), it plays a role in repairing, protecting, regenerating, and remodeling injured bodily tissues.