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Ester-C 500 mg With Citrus Bioflavoinds Timed Release

product on market Tablet or Pill American Health 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 citrus bioflavonoids are supported by strong evidence for their roles in antioxidant defense and immune function. Calcium is well-established as essential for maintaining bone density and neuromuscular signaling. These ingredients are generally recognized as safe when used within recommended dosages.

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

Label

Product Label

Label for Ester-C 500 mg With Citrus Bioflavoinds Timed Release
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Vegetarian Tablet(s)
Serving Size
Botanical with Nutrients
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
500 mg (833% DV)
Calcium
55 mg (6% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Stearic Acid Calcium Silicate Vegetable Magnesium Stearate Vegetable Cellulose Coating Ester-C Calcium Ascorbate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: For adults, take one (1) vegetarian tablet two times daily, preferably with a meal.

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

WARNING: If you are pregnant, nursing or taking any medications, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur.

Formulation Notes

No Gluten, No Yeast, No Wheat, No Milk or Milk Derivatives, No Lactose, No Soy, No Egg, No Grapefruit, No Sugar, No Preservatives, No Artificial Color, No Artificial Flavor, No Sodium.

100% Vegetarian

Non-GMO. Suitable for Vegans.

Additional Information

STORE IN A DRY PLACE AND AVOID EXCESSIVE HEAT. TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.

24-HOUR IMMUNE SUPPORT*

ACTUAL SIZE

Non-Acidic

Non-acidic Ester-C(R) is a breakthrough patented formula that contains naturally-occurring Vitamin C metabolites and is quickly absorbed. Its unique manufacturing process neutralizes pH, making it gentle on the digestive system. Ester-C(R) along with Citrus Bioflavonoids delivers advanced antioxidant protection, remaining active in the immune system for up to 24 hours!*

Prod. No. 17347 B17346 02B

Timed release to dissolve in over 8 hours.

Metadata

Product Details

UPC / SKU0 76630 17347 6
DSLD Entry Date2011-11-25
Product TypeBotanical with Nutrients
FormTablet or Pill
DSLD ID660
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
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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.