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B-12 is an essential vitamin and it is found in foods such as poultry, dairy, eggs and more

This additional functional domain distinguishes thymosin beta-4 from TB-500 and helps explain the parent molecules wider spectrum of biological activity

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Insufficient testing No data to show they are safe or effective: Most of these substances are not clinically tested on humans, and none of them have undergone the extensive trials required to gain FDA approval as a medicine