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NAC is a precursor of the amino acid L-cysteine, which itself is one of the three amino acids that form glutathione. NAC supplements are therefore widely used to help support glutathione levels

This precursor has been used in relieving asthma, cystic fibrosis, and Covid-19 and helps to thin the mucus in the lungs, improving respiratory health and inflammation (9)

Thymosin Alpha-1 (T1) is a naturally occurring peptide derived from the thymus gland, known for its immune modulation and regulatory properties

The flu shot, for example, has an effectiveness of 4060%, according to the United States Centers for Disease Control and Prevention (CDC)

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Nature 542 , 177185 (2017)