amino acid
N-Acetyl Cysteine
N-Acetyl Cysteine, a stable precursor to L-cysteine and the master antioxidant glutathione. Supports liver detoxification, respiratory health, and has mucolytic and anti-inflammatory properties.
Marketing vs Evidence
What brands claim
"Detox support" and "glutathione booster" — popular in liver-cleanse and detox supplement stacks.
What the research shows
Has strong clinical evidence for specific uses: acetaminophen overdose treatment and respiratory mucolytic. Does support glutathione synthesis. But "detox" as popularly marketed is meaningless — NAC supports specific glutathione-dependent pathways, not a general cleanse.
What it’s good for
N-Acetyl Cysteine for Acne
Strong2 studies · 2 supporting · 0 against
7 safety notes
Tops up your body’s main antioxidant, which calms the inflammation behind breakouts.
Dose: 600–1200 mg
Tested as: topical N-acetylcysteine (compounded skin-applied preparation, not an oral capsule)
N-Acetyl Cysteine for Frequent Colds
Solid1 study · 1 supporting · 0 against
7 safety notes
Tops up the antioxidant your immune cells run on, and thins mucus.
Dose: 600–1200 mg
N-Acetyl Cysteine for Chronic Inflammation
Evidence1 study · 1 supporting · 0 against
7 safety notes
Raw material for your body’s main antioxidant, which quietens inflammatory signalling.
Dose: 600–1800 mg
N-Acetyl Cysteine for Joint Pain
No Benefit2 studies · 1 supporting · 1 against
8 safety notes
How it was tested: A 70-person trial in rheumatoid arthritis found no reduction in disease activity or joint pain.
Raises the antioxidant inside cartilage cells, meant to slow how fast they wear.
Dose: 600–1200 mg
N-Acetyl Cysteine for Bloating
Not verified3 studies · 0 supporting · 0 against
8 safety notes
Why it gets suggested: Raises the antioxidant that protects your gut lining, and helps break down bacterial films.
Dose: 600–1200 mg
Why we could not verify it: The trial measured whether a stomach infection was cleared, not whether bloating improved.