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Ester-C 500mg

American Health · Supplements · 500mg · calcium ascorbate
4.63rd party testedstrong evidence
6.2of 10
American Health Ester-C 500mg
where to buy · 2 sellersfrom S$25S$0.21 per serving
Good for: immunity. Weaker case for energy.

The score explained

evidence, testing and value, weighed before price

Why 6.2 of 10: Provisional: standard C evidence, sponsor-led differentiation.

what’s good
  • Non-acidic, stomach-friendly
  • Established brand
worth knowing
  • Retention claims rest on small sponsor studies
  • Costs more than plain C

what the evidence says

The underlying vitamin C evidence applies unchanged: modest cold-shortening, no prevention. Ester-C's distinctive marketing claims about superior absorption and retention trace to small manufacturer- sponsored studies; independent replication is limited. Choose it for stomach comfort, not for the claimed superiority.

Plain-language assessment of the human evidence. No cherry-picked citations.

reviews

4.6· 2,100 reviews, aggregated

Most reviewers take it for immunity and report it doing its job quietly. Ratings cluster around 4.6 stars across retailer sites, with few complaints beyond shipping.

immunityeasy to tolerategreat value
AI summary of public reviews

Stack this with

NOW Foods Vitamin C-1000SupplementsNOW Foods Vitamin C-1000Both target immunity. NOW Foods Vitamin C-1000 covers the nutrient side of immunity, a cheap daily base under everything else you do.Blackmores Bio C 1000SupplementsBlackmores Bio C 1000Both target immunity. Blackmores Bio C 1000 covers the nutrient side of immunity, a cheap daily base under everything else you do.Minmed Vitamin D TestTestingMinmed Vitamin D TestBoth target immunity. Minmed Vitamin D Test gives you a baseline for immunity before you spend more on fixes.