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Ester-C 1000 mg

product on market Tablet or Pill Vitabase Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 14% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C and citrus bioflavonoids, including rutin and hesperidin, are supported by moderate evidence for supporting immune function and antioxidant activity. Calcium provides essential structural support for bones and teeth. However, the overall evidence coverage for this specific formulation is very limited.

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

Label

Product Label

Label for Ester-C 1000 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
14%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
1000 mg (1668% DV)
Calcium
125 mg (12% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
25 mg
Market median: 500.0mg (19 products)
Hesperidin
25 mg
Rose Hips
25 mg
Acerola
25 mg

Other Ingredients

Magnesium Stearate Cellulose Vegetable Stearin Dicalcium Phosphate Silica
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, adults take one (1) tablet, one (1) to two (2) times daily with meals, or as directed by a health care professional.

Warnings & Precautions

Keep out of reach of children.

Formulation Notes

Inter-Cal's exclusive manufacturing process provides a readily absorbable, non-acidic form of Vitamin C, unlike ascorbic acid which is highly acidic. Citrus Bioflavonoid Complex with Rutin and Hesperidin have been added for synergistic benefits.

Contains No Added sugar, salt, dairy, yeast, wheat, corn, soy, preservatives, artificial colors or flavors.

Ester-C 1000 mg With 200 mg Bioflavonoid Complex Per Tablet

Additional Information

QUALITY AND POTENCY GUARANTEED.

Vb

Store in a cool, dry place and away from direct light.

Metadata

Product Details

DSLD Entry Date2012-03-23
Product TypeOther Combinations
FormTablet or Pill
DSLD ID7080
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.