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NAC N-Acetyl-L-Cysteine

product on market Tablet or Pill Allergy Research Group Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

N-Acetyl Cysteine serves as a precursor to glutathione, which supports antioxidant defenses and respiratory health. There is strong evidence supporting its use as a mucolytic agent to clear mucus in pulmonary conditions. Research indicates it is generally well-tolerated when used as directed.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for NAC N-Acetyl-L-Cysteine
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
120
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Market median: 600.0mg (7 products) 39 studies (A:2, B:13)

Other Ingredients

Dicalcium Phosphate Microcrystalline Cellulose Croscarmellose Sodium Stearic Acid Magnesium Stearate Silicon Dioxide
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use As a dietary supplement, 1 tablet one to three times daily, or as directed by a healthcare practitioner.

Formulation Notes

NAC N-Acetyl-L-Cysteine NAC, the acetyl derivative of L-cysteine, is more stable than L-cysteine, and can convert into L-cysteine after being absorbed. Free form amino acid, high purity, well tolerated, and in tablet form to insure potency.

Glutathione Precursor

Hypoallergenic

Additional Information

Keep in a cool, dry place, tightly capped.

Metadata

Product Details

UPC / SKU7 13947 71370 3
DSLD Entry Date2024-01-24
Product TypeNon-Nutrient/Non-Botanical
FormTablet or Pill
DSLD ID304262
Data Updated2026-04-11
Research

Research Evidence

41
Research Sources
51
Avg Quality
19
Rct
13
Meta Analysis
9
Clinical Trial
B N-acetylcysteine as an adjuvant therapy for Helicobacter pylori eradication
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
B Effect of high-dose N-acetylcysteine on exacerbations and lung function in patients with mild-to-moderate COPD: a double-blind, parallel group, multicentre randomised clinical trial
Rct Nature communications 2024 PubMed DOI
B N-acetylcysteine for non-paracetamol (acetaminophen)-related acute liver failure
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
B Influence of N-acetylcysteine on chronic bronchitis or COPD exacerbations: a meta-analysis
Meta Analysis European respiratory review : an official journal of the European Respiratory Society 2015 PubMed DOI
B A randomised controlled trial of a mitochondrial therapeutic target for bipolar depression: mitochondrial agents, N-acetylcysteine, and placebo
Rct BMC medicine 2019 PubMed DOI
B Efficacy of N-acetylcysteine for patients with depression: An updated systematic review and meta-analysis
Meta Analysis General hospital psychiatry 2024 PubMed DOI
B Cysteine, cystine or N-acetylcysteine supplementation in parenterally fed neonates
Meta Analysis The Cochrane database of systematic reviews 2006 PubMed
B N-acetylcysteine as an adjunctive treatment for bipolar depression: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Bipolar disorders 2021 PubMed DOI
B N-acetylcysteine as an adjunctive treatment for bipolar depression and major depressive disorder: a systematic review and meta-analysis of double-blind, randomized placebo-controlled trials
Meta Analysis Psychopharmacology 2020 PubMed DOI
B N-acetylcysteine Treatment in Chronic Obstructive Pulmonary Disease (COPD) and Chronic Bronchitis/Pre-COPD: Distinct Meta-analyses
Meta Analysis Archivos de bronconeumologia 2024 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.