NAC (N-Acetyl Cysteine)
A cysteine derivative the body uses to make glutathione, its main intracellular antioxidant. Studied for respiratory, liver, and antioxidant support.
Educational only — not medical advice. BodEvo summarizes research cautiously and labels estimates as estimates. Talk to a physician or registered dietitian before starting any supplement, diet, or training program.
What the evidence says
Best evidence is in clinical settings (e.g., as a mucolytic and in acetaminophen overdose, which are medical uses). Evidence for general "antioxidant" supplementation in healthy lifters is limited and not a performance enhancer.
Typical dose & timing
Dose: Commonly 600–1,200 mg/day in studies; follow label and clinician guidance.
Timing: With or without food; consistency matters more than timing.
Role in a stack
Optional antioxidant/glutathione-support add-on, not a foundational performance supplement.
Redundancy check: Overlaps with other antioxidant supplements (glutathione, high-dose vitamin C/E); stacking many at once has diminishing evidence.
Cautions & safety
Can cause nausea or GI upset. May interact with nitroglycerin and some medications. Regulatory status as a supplement has shifted — check local availability.
Generally well tolerated at studied doses. Not a substitute for medical treatment. Talk to a clinician if you take medications or have a health condition.
Best for
antioxidant support · glutathione production · general health interest
Use it in the app: open the Supplement Library and Stack Builder — free, local-first, no account required.