N-Acetyl Cysteine (NAC)
A versatile supplement that's a precursor to glutathione (your master antioxidant) and has a long history in medicine — from ER overdose treatment to respiratory support.
Benefits
- +Boosts glutathione production — the body's own antioxidant defense
- +Supports liver health and detoxification
- +May help with respiratory issues (thins mucus)
- +Emerging evidence for mental health support, especially OCD and depression
- +Neuroprotective — may support brain health
Dosage & Cost
One of the most versatile supplements. Particularly valuable for people who smoke, drink alcohol, or have liver concerns. The FDA briefly tried to restrict it — it remains widely available.
Side Effects
- !Can cause nausea or stomach upset, especially on an empty stomach
- !May worsen bleeding in people with bleeding disorders
- !Sulfur-like smell and taste
- !High doses (1600+ mg) can lower blood pressure
- !May interact with blood thinners and certain medications
Food Sources
- • Cysteine (the amino acid precursor) is found in eggs, garlic, onions, and meat
- • NAC itself is not a food — it's a pharmaceutical-grade supplement
- • Supporting glutathione via diet plus NAC is a smart combo
References & Links
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This page is for informational purposes only. The information here has not been evaluated by the Food and Drug Administration (FDA). No supplement discussed on this page is intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor or a qualified healthcare professional before taking any dietary supplement.