Life Extension N-Acetyl-L-Cysteine — 600 mg

NAC Sustain^® is in a special Sustain™ bilayer Quick Release/Sustained Release format of N-Acetyl-L-Cysteine (NAC), a powerful antioxidant amino acid and a precursor to the critical antioxidant glutathione.* Glutathione exerts a variety of protective effects, including detoxification and intracellular defense against oxidative stress.* Substances known to reduce glutathione status are acetaminophen and alcohol.*

The advanced bilayer Sustain™ tablets combine 1/3 Quick Release and 2/3 Sustained Release formats to both immediately raise and maintain blood levels over a longer period of time.* NAC Sustain^® releases in the small intestine over an 8 hour period, compared to the 1.5 hour biological half-life of NAC in the bloodstream.*