1 Product identity
Ingredient risk
1 ingredient to use with caution

Ester-C 1000 mg With Citrus Bioflavonoids

BrandAmerican HealthOther Combinations Tablet or Pill 7 ingredients 1 caution DSLD #16931
Net contents: 45 Vegetarian Tablet(s)
Target: Adults and Children 4 years and above
DSLD entry: 2013-01-25
2 Ingredients (7)
IngredientGroupSafety
Vitamin CVitamin C (calcium ascorbate)
CalciumCalciumConditionally Safe
Citrus Bioflavonoids ComplexFlavonoid (mixture)
Vegetable CelluloseCellulose
Calcium SilicateCalcium Silicate
Vegetable Magnesium StearateMagnesium stearateUse with Caution
Stearic AcidStearic Acid
Ingredient amounts require the full DSLD label. View full label at NIH DSLD →
⚠️ Use with caution — restricted in some markets
Magnesium — Severe deficiency (<0.50 mmol/L) causes secondary hypocalcemia and hypokalemia that will not correct until magnesium is repleted first [1].
3 Safety cross-reference
Vitamin C — Limited Evidence
⚠ GI distress at high doses
⚠ Kidney stones risk >1g/day
Calcium — Conditionally Safe
⚠ Cardiovascular risk debated >1,000 mg/day
⚠ Kidney stones
Magnesium — Use with Caution
⚠ Diarrhea (especially oxide)
⚠ Accumulates in renal impairment
4 Label claims
• All Other
• Structure/Function
5 Data source
DSLD ID16931
SourceOffice of Dietary Supplements, NIH
Market statusOn market
Entry date2013-01-25
6 More from American Health
View American Health Safety Scorecard → 33 products
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7 Cite this page
Vancouver
Pkhakadze G. Ester-C 1000 mg With Citrus Bioflavonoids — product analysis [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 Jun 25]. Available from: https://supplement.ge/products/ester-c-1000-mg-with-citrus-bioflavonoids-16931/
CC BY 4.0. Product data from NIH DSLD; safety analysis by SupplementIndex.
GP
Analyzed by SupplementIndex
PHIG · Editor-in-Chief: Prof. Giorgi Pkhakadze, MD, MPH, PhD
Product data sourced from the NIH Dietary Supplement Label Database (DSLD). Safety cross-referencing by SupplementIndex. This analysis is for informational purposes only. For corrections: info@accreditation.ge.
Publisher: PHIG