American Health Ester-C with Citrus Bioflavonoids Capsules
- Vitamin C
- More reviewed than 76%
A non-acidic vitamin C option worth trying if standard C tablets bother your stomach; otherwise a conventional ascorbic acid product will cost less for the same dose.
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How it ranks among the 88 vitamin c we track
4.8★ across 9,936 Amazon ratings, Bayesian-smoothed toward the category average.
9,936 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
4,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 88 vitamin c we track - how the scorecard works · full vitamin c data report. Confidence: limited - incomplete product information.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
American Health's Ester-C capsules deliver 500 mg of a non-acidic vitamin C form alongside citrus bioflavonoids, aimed at people whose stomachs react to standard ascorbic acid tablets. The bottle holds 120 capsules, a 60 serving supply at two capsules per serving.
Ester-C is a patented calcium ascorbate complex rather than plain ascorbic acid, which is the basis for the gentler-on-digestion claim. The listing data available here does not break down the bioflavonoid blend further, so treat the citrus bioflavonoid content as a supporting ingredient rather than a headline dose.
- 500 mg Ester-C vitamin C per serving
- Citrus bioflavonoids included
- Formulated to be non-acidic and gentle on the stomach
- 120 capsules, a 60-serving supply
Who it's for
Suited to adults who want daily vitamin C but have found regular ascorbic acid tablets upset their stomach. Not the pick for anyone wanting the lowest cost per milligram of plain vitamin C.
Strengths and trade-offs
Drawn from this product's published specifications.
- Non-acidic vitamin C formula
- Includes citrus bioflavonoids
- 500 mg dose per serving
- Two capsules needed per serving
- No further ingredient breakdown provided in the listing
Performance notes
Ester-C is manufactured as calcium ascorbate combined with vitamin C metabolites, which the brand positions as non-acidic and gentler on digestion than standard ascorbic acid. The citrus bioflavonoids are included as a companion ingredient in each capsule.
Specifications
| Brand | American |
|---|---|
| Model | 16961 |
How it compares
This product against the closest alternatives we track in vitamin c.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| American Health Ester-C with Citrus Bioflavonoids CapsulesThis product | 4.8 / 5 | 9,936 | 2.7 / 5 |
| Emergen-C 1000mg Vitamin C Powder for Daily Immune Support Caffeine Free Vitamin C…Emergen-C | 4.8 / 5 | 53,857 | 4.7 / 5 |
| Nature's Bounty Vitamin C + Rose HipsNature’s | 4.8 / 5 | 49,343 | 4.7 / 5 |
| Nature Made Extra Strength Vitamin C 1000 mg TabletsNATURE | 4.8 / 5 | 40,190 | 4.7 / 5 |
| Nutricost Vitamin C with Rose Hips 1025mgNutricost | 4.8 / 5 | 23,867 | 4.7 / 5 |
Similar vitamin c from other brands
Questions about the American 16961
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How many capsules make up one serving of American Health Ester-C?
Two capsules per serving, with 120 capsules in the bottle giving 60 servings.
Is American Health Ester-C acidic like regular vitamin C?
No, it is formulated as a non-acidic calcium ascorbate form intended to be gentler on the stomach.
Does this product contain bioflavonoids?
Yes, citrus bioflavonoids are included alongside the 500 mg of Ester-C vitamin C.