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Hair, Skin & Nails

product on market Capsule CHK Nutrition Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 38% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Biotin and methylsulfonylmethane are commonly used to support keratin structure, though evidence for their efficacy in healthy individuals is limited. Gotu Kola and dandelion extracts are traditionally used for skin health, but clinical data is sparse. Overall, the evidence coverage for this specific ingredient combination is very low.

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

Label

Product Label

Label for Hair, Skin & Nails
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
Other Combinations
Product Type
38%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

2000 mcg (667% DV)
66.7× RDA — above typical dose 27 studies (A:0, B:11)
Market median: 1000.0mg (2 products)
Carrot
100 mg
Gotu Kola extract
70 mg
50 mg
Market median: 300.0mg (159 products)
Market median: 108.0mg (8 products) 9 studies (A:0, B:4)
Market median: 260.0mg (249 products) 158 studies (A:4, B:61)
Market median: 100.0mg (120 products)

Other Ingredients

Rice Flour Vegetable Capsule Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: Take 1 capsule up to three times daily.

Warnings & Precautions

Note: If you have any health conditions or are taking any medications, consult your healthcare practitioner before using this product.

Keep out of reach of children.

Formulation Notes

Manufactured in a cGMP certified facility.

Made in USA from domestic and foreign materials.

Additional Information

Store in a cool, dry place.

New day. Fresh start. Better health.

Metadata

Product Details

UPC / SKU8 71230 00691 5
DSLD Entry Date2020-06-24
Product TypeOther Combinations
FormCapsule
BrandCHK Nutrition
DSLD ID228644
Data Updated2026-04-11
Research

Research Evidence

31
Research Sources
53
Avg Quality
12
Meta Analysis
9
Systematic Review
5
Rct
2
Clinical Trial
1
Regulatory Source
1
Openfda Safety
B Pentasaccharides for the treatment of deep vein thrombosis
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
B Quantitative comparison of the efficacy of clinical drug treatments for primary progressive multiple sclerosis
Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2023 PubMed DOI
B Dietary interventions for multiple sclerosis-related outcomes
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
B Interventions for infantile seborrhoeic dermatitis (including cradle cap)
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
B Effect of varicocelectomy on sperm deoxyribonucleic acid fragmentation rates in infertile men with clinical varicocele: a systematic review and meta-analysis
Meta Analysis Fertility and sterility 2021 PubMed DOI
B Effect of feeding biotin on milk production and hoof health in lactating dairy cows: a quantitative assessment
Meta Analysis Journal of dairy science 2011 PubMed DOI
B Factitious Graves' Disease Due to Biotin Immunoassay Interference-A Case and Review of the Literature
Systematic Review The Journal of clinical endocrinology and metabolism 2016 PubMed DOI
B Effect of biotin on milk performance of dairy cattle: a meta-analysis
Meta Analysis Journal of dairy science 2011 PubMed DOI
B PROVIT: Supplementary Probiotic Treatment and Vitamin B7 in Depression-A Randomized Controlled Trial
Rct Nutrients 2020 PubMed DOI
B High-dose biotin for multiple sclerosis: A systematic review and meta-analyses of randomized controlled trials
Meta Analysis Multiple sclerosis and related disorders 2021 PubMed DOI
View all evidence for Biotin →
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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.