NAC 500

product on market Capsule ProCaps Laboratories Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

N-Acetyl Cysteine and Vitamin C are researched for their roles in supporting antioxidant activity and glutathione production. There is strong evidence for their use in respiratory and immune health. However, overall evidence coverage for this specific formulation remains limited.

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

Label

Product Label

Label for NAC 500
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
360
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
30 mg (33% DV)
Market median: 600.0mg (7 products) 39 studies (A:2, B:13)

Other Ingredients

Gelatin Capsule
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use Consume one or more capsules daily or as recommended by your physician. As with any dietary supplement, this product is most effective as part of a healthy diet and active lifestyle. For questions about the use of this product call 800.332.7799.

Formulation Notes

Detoxifying anti-oxidant Glutathione precursor

Andrew Lessman's NAC 500 delivers 500 mg of n-acetyl cysteine (NAC), an essential glutathione precursor and detoxifying antioxidant that is a uniquely active form of the conditionally essential amino acid cysteine. It is the sulfur in cysteine's "thiol" (sulfhydryl) group that imparts NAC's unique properties, including its critical role as a building block of glutathione - our body's most powerful, internally-produced protective compound. NAC offers important protection to the brain, heart and lungs, but because of its unique detoxifying role, NAC provides targeted protection to the hard working cells of the liver and kidneys making it a sensible part of any internal cleanser detoxification program. Unfortunately, NAC is not readily available from the diet and it cannot be readily produced by the body, so supplementation is a straightforward way of promoting its protective benefits.

Contains no additives or common allergens Contains no milk, soy, yeast, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens, genetically modified (GMO) ingredients or manufacturing additives.

Additional Information

For over 40 years Unsurpassed Purity, Quality and Efficacy 100% solar production Zero carbon footprint Andrew Lessman, Founder Questions? Reorders? 800.800.1200 www.ProCapslabs.com HSN www.HSN.com 800.944.9999 www.QVC.com 800.345.1515

100% solar

Metadata

Product Details

UPC / SKU385999
DSLD Entry Date2022-10-24
Product TypeOther Combinations
FormCapsule
DSLD ID275277
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
View all evidence for Vitamin C →
Compare

Similar Products

View all Vitamin C products →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.