🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 40% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

2 Tablet(s) Serving Size
28 Servings
Other Combinations Product Type
40% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
500 mg (556% DV)
10 mg (91% DV)
✅ Within RDA (0.9× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 10mg UL 40mg
10 mg
📊 Market median: 10.0mg (105 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 10mg
2 mg
📊 Market median: 4.0mg (32 products)
This product: 2mg
📊 Market median: 100.0mg (120 products)
Median 100.0mg This product: 50mg

Other Ingredients

Microcrystalline Cellulose Croscarmellose Sodium Ascorbyl Palmitate Dextrin Dextrose Soy Lecithin Sodium Carboxymethylcellulose Sodium Citrate

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) Kosher

Product Information

📋 Directions for Use

Directions: Adults, take two (2) tablets daily, preferably with food.

⚠️ Warnings & Precautions

Contains: Soy

Keep out of reach of children.

Consult your physician if you are pregnant, nursing, taking a prescription drug, or have a medical condition.

There is a safety seal under the cap. Do not use if the seal is broken or missing.

🧪 Formulation Notes

Contains: Soy

OK

Additional Information

Potency Guaranteed

Laboratory tested, Quality guaranteed. Meets USP specification for uniformity, potency, and disintegration, where applicable.

Store below 25(0) C

134.010101 LB.001267

OK

Product Details

DSLD Entry Date 2019-04-25
Product Type Other Combinations
Form Tablet or Pill
Brand USANA
DSLD ID 201166
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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