NAC Research Guide
Full name: N-Acetyl Cysteine
The rate-limiting precursor to glutathione synthesis. NAC replenishes intracellular GSH, protects the liver from oxidative damage, breaks down mucus, and chelates heavy metals. Also researched for OCD, addiction, and neuroinflammation.
How NAC Works
Provides cysteine for glutathione synthesis (rate-limiting step). Directly scavenges free radicals via sulfhydryl group. Chelates mercury, lead, and arsenic. Modulates glutamate via system Xc- transporter for neuropsychiatric effects.
Dosing Protocol
- Typical dose: 600-1800 mg
- Frequency: 1-2x daily
- Duration: Ongoing or cycles
- Route: Oral capsule or IV (hospital)
Reported Benefits
- Glutathione replenishment
- Liver protection (acetaminophen, alcohol)
- Heavy metal chelation
- Mucus thinning (respiratory)
- OCD/addiction support
- Anti-inflammatory
Potential Side Effects
- GI discomfort
- Sulfur smell/taste
- Nausea
- Rare: histamine liberation
- May deplete zinc/copper
Research Citations
- NAC and liver protection (2021) - Standard of care for acetaminophen overdose; 1200mg/day reduced ALT elevations by 50% in NAFLD patients over 12 weeks.
- NAC and glutamate modulation (2022) - Meta-analysis showed NAC (2400mg/day) reduced OCD symptom severity by 30% and substance craving scores by 40% as adjunctive therapy.
Related Detox & Antioxidant Compounds
View full NAC profile with 3D molecule viewer →