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C

product on market Tablet or Pill Swanson 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 and bioflavonoids are supported by strong evidence for antioxidant support and immune function. Calcium is well-established for maintaining bone health and nerve transmission. Together, these ingredients provide foundational nutritional support with a high safety profile.

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

Label

Product Label

Label for 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)
Calcium
120 mg (9% DV)
200 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Microcrystalline Cellulose Stearic Acid Croscarmellose Sodium Magnesium Stearate Hydroxypropyl Methylcellulose Silica Pharmaceutical Glaze
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: As a dietary supplement, take one tablet per day with water or as recommended by your healthcare provider.

Warnings & Precautions

Warning: For adults only.

Consult your physician before using this or any product if you are pregnant or nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Do not use if seal is broken.

Formulation Notes

Buffered Vitamin C with Bioflavonoids

Additional Information

Boosts immune system function and antioxidant reserve Buffered with minerals to prevent potential stomach upset Helps combat free radical damage Science-Backed Quality Since 1969

Store in a cool, dry place.

Immune Health Gentle on the stomach

SW946 Rev 1 06 14 18

Metadata

Product Details

UPC / SKU0 87614 01946 8
DSLD Entry Date2019-02-25
Product TypeOther Combinations
FormTablet or Pill
BrandSwanson
DSLD ID187536
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.