N-Acetyl Cysteine (NAC)
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N-Acetyl Cysteine (NAC). Glutathione precursor with mucolytic, hepatoprotective, and psychiatric uses.
How it works. Provides cysteine for glutathione synthesis; modulates glutamate via cystine-glutamate antiporter.
What the research supports. 3 graded claims. Strongest: Reduces acetaminophen-induced hepatotoxicity (strong).
How much to take. Typical dose: 600–1800 mg/d (divided). Empty stomach if tolerated, else with food.
Side effects and interactions. 1 medication interaction listed. Serious: Rare allergic reaction (IV).
Stacking. Pairs well with Glycine.
Common forms. Available as NAC, Liposomal NAC.
Key studies. 10 studies cited. The strongest are listed with links to PubMed.
Community. Experiences from people who have tried N-Acetyl Cysteine (NAC). Anecdotes are not medical advice.
N-Acetyl Cysteine (NAC). Glutathione precursor with mucolytic, hepatoprotective, and psychiatric uses.
What it is
Acetylated form of L-cysteine; FDA-approved antidote for acetaminophen overdose.
Also called
Food sources
Goals
How it works
Provides cysteine for glutathione synthesis; modulates glutamate via cystine-glutamate antiporter.
Pathways
- GSH synthesis
- Glutamate modulation
Effects
- ↑Glutathione increases
- +Hepatocyte protection supports
- ↓Compulsive behaviors decreases
What the research supports
Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.
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Side effects & interactions
Common side effects
- GI upset
- Sulfur-like odor
Serious
- Rare allergic reaction (IV)
Medication interactions
Potentiates hypotension.
Check any supplement–medication combination with your pharmacist before starting.
Common forms
- NAC
- Liposomal NAC
Key studies
10 studies cited in total.
Opens current human and preclinical literature matching N-Acetyl Cysteine (NAC) and "Reduces acetaminophen-induced hepatotoxicity". Filter by RCT, meta-analysis, or year on the results page.
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Discussion
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