Ester-C Ester-C 500mg supplement bottle
Ester-C

Ester-C 500mg

What We Researched
3 active ingredients analyzed · 10 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
71
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (Calcium ascorbate*) 500 mg —
Calcium (Calcium ascorbate*) 60 mg —
Zinc (Zinc oxide) 2 mg —
Bioavailability Good

Absorption Rating

  • Vitamin C (Calcium ascorbate*) Good
  • Calcium (Calcium ascorbate*) Good
  • Zinc (Zinc oxide) Poor
Other Ingredients Very Good

Fillers & Additives

  • Croscarmellose Sodium
  • Hypromellose
  • Magnesium Stearate
  • Maltodextrin
  • Microcrystalline Cellulose
  • Polysorbate 80 Medium
  • Purified Water
  • Silica
  • Stearic Acid
  • Triacetin
Efficacy Poor

Dosage Analysis

  • Vitamin C (Calcium ascorbate*) 500 mg Effective
  • Calcium (Calcium ascorbate*) 60 mg Under-dosed
  • Zinc (Zinc oxide) 2 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (Calcium ascorbate*) 500 mg
Calcium (Calcium ascorbate*) 60 mg
Zinc (Zinc oxide) 2 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Polysorbate 80 Caution

Helps mix oil and water-based ingredients.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Triacetin Generally_safe

It is used as a solvent or humectant.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Ester-C

· 1 products

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Frequently Asked Questions
Is Ester-C Ester-C 500mg a good supplement?

Ester-C Ester-C 500mg received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 3 active ingredients Of the 10 inactive ingredients, 7 are rated safe and 1 are flagged for review.

What are the ingredients in Ester-C Ester-C 500mg?

Ester-C Ester-C 500mg contains 3 active ingredients: Vitamin C (Calcium ascorbate*) (500 mg), Calcium (Calcium ascorbate*) (60 mg), Zinc (Zinc oxide) (2 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Ester-C Ester-C 500mg safe to take?

Ester-C Ester-C 500mg has been analyzed for ingredient safety across all its components. Of 10 inactive ingredients, 7 are rated safe. 1 ingredient is flagged for review: Polysorbate 80. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.