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Description
Cysteine appears to be more readily depleted amino acid of the three, probably because it is less ubiquitous in the standard American diet
It is isolated from a peptide complex called epithalamin, itself derived from bovine pineal glands, and primarily acts within the neuroendocrine system [1, 2]
Vaccines providing a long duration of immunity are preferred over those with a short duration of immunity

Many commercial GlyNAC products provide considerably less, and research is early on what dose is most beneficial for the general population
