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N-ACETYL-L-CYSTEINE NAC has a biological half-life of 112 hours in the bloodstream. Jarrow Formulas NAC SUSTAIN will release in the small intestine over a 2-4 hour period in order to maintain blood levels over a longer period of time. As an amino acid and antioxidant, NAC is a precursor to the critical antioxidant glutathione, which is produced primarily by the liver.

:: Amino Acids > NAC 3374

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