80
Affiliate disclosure. We may earn a commission when you buy through this link, at no extra cost to you.
Supplement Facts
Label scan from NIH DSLD — open full size| Ingredient | Amount | % DV% Daily Value — how much of the recommended daily intake one serving provides, based on a 2,000 calorie diet. 100% = full daily need. Values over 100% are common for water-soluble vitamins (B, C) and generally safe. Values over 200% are highlighted. |
|---|---|---|
| L-Cysteine | 900 mg | — |
Score Breakdown
Dosage TransparencyAre all ingredient amounts explicitly listed on the label? Are %DV values provided where applicable? This measures transparency of dosing, not clinical efficacy.30/35
Label TransparencyHow complete is the labeling? Checks serving info, dietary certifications, and whether any doses are hidden behind proprietary blends.20/25
Formulation CleanlinessHow clean are the inactive ingredients? Penalizes artificial colors, sweeteners, titanium dioxide. Rewards vegan, gluten-free, organic.25/25
Ingredient ProfileFormula composition signals: focused vs comprehensive, use of branded/patented forms (KSM-66, Albion, etc.), explicit dosing.5/15
This score evaluates label quality — dosage disclosure, transparency, cleanliness of inactive ingredients, and formula composition. It does not measure clinical efficacy, bioavailability, or third-party testing. Read full methodology
Better-scored alternatives
Products with overlapping ingredients and a higher SupplementScore. Based on dosage transparency, label cleanliness, and formula quality.
BioCareCysteine Complex
capsule30 servings
89/100+9
Physician's PreferenceN-Acetyl Cysteine
capsule100 servings
81/100+1
Alternatives share ingredients with this product (or come from its category, Multivitamins) and have a higher overall score. This is not a recommendation — always verify ingredients and dosages match your needs.
Reviews (0)
No reviews yet — be the first.
Taken L-Cysteine Powder? Your experience helps others decide. It takes about a minute.
All scores are algorithmically generated from publicly available label data (NIH Dietary Supplement Label Database) and reflect label quality — not clinical efficacy, safety, or product quality. This page is not affiliated with or endorsed by Source Naturals. If you represent this brand and believe any information is inaccurate, please contact us for a correction. Read full methodology