🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 42% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Tablet(s) Serving Size
30 Servings
Other Combinations Product Type
42% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
400 mg (667% DV)
60 IU (200% DV)
✅ 2.7× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 40.2mg UL 1000mg
4 mg (200% DV)
📊 3.1× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 4mg UL 100mg
5000 mcg (1667% DV)
📊 166.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 5.0mg
20 mg (200% DV)
📊 4.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 20mg
20 mg (133% DV)
✅ 1.8× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 20mg UL 40mg
140 mcg (200% DV)
✅ 2.5× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.14mg UL 0.4mg
4 mg (200% DV)
✅ 1.7× RDA — within safe limits 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 4mg UL 11mg
📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews
This product: 50mg
MSM
200 mg
📊 Market median: 1000.0mg (2 products)
This product: 200mg
Gotu Kola extract
120 mg
Proprietary Blend
400 mg

Other Ingredients

Calcium Carbonate Microcrystalline Cellulose Stearic Acid Croscarmellose Sodium Coating Magnesium Stearate Silica

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested use Take two tablets daily with a meal. Drink at least 8 glasses of water daily.

⚠️ Warnings & Precautions

Can I give Hair Skin Nails to my children? Hair Skin Nails is designed for adult use and is not recommended for children. Always consult your pediatrician before giving any supplements to children.

Caution: Consult your physician if you are pregnant, nursing, taking medications, or have a medical condition.

Warning: Keep out of reach of children.

Do not use if tamper evident seal is broken or missing.

Additional Information

Protect from heat, light, and moisture.

Product Details

DSLD Entry Date 2019-11-21
Product Type Other Combinations
Form Tablet or Pill
Brand It Works!
DSLD ID 208390
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
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
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
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
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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