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Formula 903

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

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 22% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

This formula combines Vitamin C and bioflavonoids, which have strong evidence for supporting antioxidant functions. Pycnogenol and hesperidin are included for their potential vascular and inflammatory benefits, though research evidence for these specific components is more limited. The ingredient profile maintains a high safety rating.

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

Label

Product Label

Label for Formula 903
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
22%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
500 mg (833% DV)
Calcium
62 mg (6.2% DV)
200 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Hesperidin Complex
25 mg
Pycnogenol
2.5 mg
25 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
25 mg
Market median: 500.0mg (19 products)
Rose Hips
25 mg
Acerola
25 mg

Other Ingredients

Calcium Carbonate Stearic Acid Vegetable Cellulose Silica
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a dietary supplement, take 1 tablet three times daily with meals.

Warnings & Precautions

Keep out of the reach of children.

Tamper Evident: Do not use this product if imprinted foil seal under cap is broken or missing.

Caution: If you are pregnant or nursing do not take this product.

Formulation Notes

The need for vitamin C has never been greater. Stress, environmental pollution, age and health, as well as biochemical individuality, all help to dictate our daily requirements for this essential nutrient. Unlike most other animals, humans cannot make their own vitamin C. With vitamin C being part of more than 300 bodily functions, life itself depends on daily replenishment. Is there a best form of this vital nutrient? Ester-C ascorbate, a revolutionary form of vitamin C, is the most bioavailable form developed. Metabolites in Ester-C ascorbate help the vitamin get into the bloodstream faster and in larger amounts, penetrate white blood cells more efficiently, and waste only a fraction of what other vitamin C's "send down the drain".

FDA Registered Facility (Reg. #1023013) Mfg. under Good Manufacturing Practices (GMPs)

Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.

Made in USA

Gluten free

Ester-C with bioflavonoids pycnogenol & quercetin

Supports antioxidant health and immune system health

Additional Information

Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).

New improved

Quali Pure

Metadata

Product Details

DSLD Entry Date2021-02-25
Product TypeOther Combinations
FormTablet or Pill
BrandDC
DSLD ID245363
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.