Thymosins Beta 4, TB-500 peptide were discovered in the mid 1960’s, when Allan Goldstein from the Laboratory of Abraham White at the Albert Einstein College of Medicine in New York studied the role of the thymus in development of the vertebrate immune system. Since then, Dr. Goldstein founded a company that creates thymosin alpha 1 for the purpose of increasing immune cell activity, and thymosin beta 4 (TB-500) to promote wound repair and healing. TB-500 has been shown to offer many of the same effects of growth hormone (GH), including such as increasing strength through muscle growth, improving endurance, speeding up the healing process for wounds, reducing acute/chronic pain and/or inflammation and increasing flexibility, etc.

Nowadays, TB-500 has been used extensively for race horses to prevent adhesions from forming, although it is not a prescription veterinary drug. It’s an injectable peptide with limited human use. For bodybuilders and athletes looking to speed up muscle recovery as they heal injuries, a new, synthetic version of the Thymosin Beta 4 peptide called TB-500 is available to help. This peptide has been reviewed and noted to replicate the effects of TB4 from the thymus gland, speeding up recovery time from injuries. Mostly, it’s limited to humans who like to experiment, although reports of human use of thymosin dates back as far as 1974 – when a young girl became the first person to receive injections of thymosin because she was diagnosed without a functioning thymus gland.