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no LD50 established even at very high doses in rodents No Hormonal Effects: Does not affect testosterone, estrogen, growth hormone, or other hormonal axes Gastric Origin: Derived from a naturally occurring human gastric protein, suggesting good biological compatibility Stability: Unusually stable in gastric acid, supporting oral administration potential Reported Effects: Anecdotal reports of fatigue, nausea in some research subjects TB-500 Safety Profile: (PMID: 20536472) Note: Published safety data is primarily available for Thymosin Beta-4
Last medically reviewed: 2026-06-08 by GLP3 Planner editorial
By combining traditional medical treatments with functional medicine approaches, Delara Tavakoli, M.D
Anand Thakkar is a licensed Internal Medicine physician
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