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Thorne NAC

Equipment Reference

Thorne

Thorne NAC

500mg N-acetyl cysteine for glutathione support and liver health

4.6
(2,400 community reviews)

Thorne NAC provides 500mg N-acetyl cysteine per capsule — the most reliable oral precursor to glutathione. Used for liver support, respiratory health, and oxidative stress management. NSF Certified for Sport with Thorne's standard third-party testing.

Used by
Statin usersLiver health protocolsLongevity communityWildfire/pollution exposure

Typical price: $28 – $36 USD / 90 capsules

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How It Works

NAC donates cysteine for glutathione synthesis, the body's master antioxidant. Glutathione neutralizes reactive oxygen species, supports liver Phase II detoxification, and maintains immune function. Oral glutathione is poorly absorbed; NAC is the proven workaround.

1

Glutathione Precursor

Provides cysteine for endogenous glutathione synthesis — more effective than oral glutathione.

2

Liver Support

Supports hepatic detoxification and may improve elevated liver enzymes over 8–12 weeks.

3

Respiratory Mucolytic

Thins mucus and supports respiratory health during pollution or illness exposure.

What You'll Experience

Week 1

Days 1–7

Possible sulfur burps or mild GI upset. Take on empty stomach 30 min before food.

Week 2–4

Days 8–28

Subjective recovery improvements. Liver enzymes may begin improving on labs.

Long-term

Month 2+

Well-tolerated for months. No tolerance buildup at 500–1000mg daily.

Benefits

Glutathione Support

Strong Evidence

Most reliable oral method for raising intracellular glutathione levels.

Liver Protection

Strong Evidence

Clinical evidence for hepatic support and acetaminophen toxicity prevention.

Respiratory Health

Moderate Evidence

Mucolytic effect reduces exacerbations in chronic bronchitis.

Risks & Considerations

Bleeding Risk

low risk

May slow platelet aggregation. Caution with blood thinners or pre-surgery.

Sulfur Odor

low risk

Normal sulfur smell from capsules. Not a quality defect.

Community Reviews

Synthesized consensus from Reddit, forums, and expert sources.

Reddit r/Supplements
Mostly Positive

Thorne NAC is the quality pick. 'Skip liposomal glutathione — NAC actually raises your levels. Thorne is my go-to.'

  • ·Better than oral glutathione for raising levels
  • ·NSF certified quality
  • ·Essential for statin users
View source

Last updated: 2026-07-11 · Informational only. Not medical advice.