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Vitamin C

product on market Tablet or Pill Natural Factors Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C is supported by strong evidence for its role in immune function and antioxidant protection. Citrus bioflavonoids and hesperidin are included to potentially enhance the absorption and activity of the vitamin. Research on these combined extracts is moderate, focusing on supporting vascular health and reducing oxidative stress.

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

Label

Product Label

Label for Vitamin C
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
1000 mg (1111% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Hesperidin extract
25 mg

Other Ingredients

Cellulose Gum Microcrystalline Cellulose Stearic Acid Dicalcium Phosphate Coating Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: 1 tablet 1-2 times per day or as directed by a health professional.

Warnings & Precautions

Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery.

Keep out of reach of children.

Sealed for your protection. Do not use if seal is broken.

Formulation Notes

Vitamin C 1000 mg Time Release with citrus bioflavanoids is designed to gradually release nutrients over an eight-hour period. Bioflavanoids both enhance the absorption and act in synergy with vitamin C to provide antioxidant protection, keep collagen healthy, and help increase capillary strength.

Vitamin C is a powerful antioxidant which supports healthy bones, cartilage, teeth and gums. It helps protect cells against free radical damage and vitamin C deficiencies in the daily diet, supports healthy cell growth and immune function.

Contains no artificial colors, preservatives, or sweeteners; no dairy, starch, sugar, wheat, gluten, yeast, soy, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs.

Suitable for vegetarians/vegans.

Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.

Additional Information

Supporting your immune system is critical this time of year. The right supplementation can make a dramatic difference.

For freshness, store in a cool, dry place.

Product of Canada Recycle

One-Month Supply

Metadata

Product Details

UPC / SKU0 68958 01310 7
DSLD Entry Date2021-04-22
Product TypeOther Combinations
FormTablet or Pill
DSLD ID247527
Data Updated2026-04-11
Research

Research Evidence

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