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L-Cysteine-S

product on market Tablet or Pill Nutri-West 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

L-Cysteine Hydrochloride provides a precursor for glutathione synthesis to support antioxidant defenses. Research evidence for this specific amino acid application is moderate. The ingredient profile maintains a high safety rating for general consumption.

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

Label

Product Label

Label for L-Cysteine-S
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Amino acid/Protein
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Directions for use: One tablet daily or as directed.

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

TAMPER RESISTANT OUTER SEAL - DO NOT USE IF BROKEN.

Formulation Notes

Contains no starch, salt, sugar, wheat, corn, yeast, soy, milk, or preservatives.

Additional Information

0493 MFG04/2010

FOR DISTRIBUTION BY HEALTH CARE PROFESSIONALS ONLY.

Store in cool, dry place.

Manufactured under strict GMP and USP guidelines.

"When You Want The Best"

Product # 1912

Metadata

Product Details

DSLD Entry Date2013-11-25
Product TypeAmino acid/Protein
FormTablet or Pill
BrandNutri-West
DSLD ID28009
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
View all evidence for Electrolytes →
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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.