For immune support and antioxidant defense, this gives you a strong dose — 1,000 mg of **Vitamin C** per capsule, and the label suggests two daily for 2,000 mg total, right at the top of the clinical range. Even one capsule puts you at a fully effective level. The formula also includes 200 mg of **citrus bioflavonoids**, which may support absorption.
Ester-C is marketed as a gentler, better-absorbed form of vitamin C, but the research behind those claims is limited. Independent studies haven't shown a clear advantage in terms of blood levels or health outcomes, so the premium you're paying for the Ester-C form may not translate into better results for you.
The capsules use gelatin, so they're not suitable if you follow a vegetarian or vegan diet. At the full two-capsule dose, you're at the 2,000 mg tolerable upper limit — generally safe, but worth knowing if you also get vitamin C from other sources throughout the day.
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What it does
A combination of 3 label ingredients.
Vitamin C
ester-cBudget
Supports normal collagen production and immune function, and helps the body absorb iron from plant foods.
Calcium
Mixed formsGrade —
Supports the maintenance of normal bones and teeth, muscle function and nerve signaling.
Ingredients (3)
Calcium
108 mgTrace amount — not scored
Other ingredients
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
Lab testing
How to take it
With or without food
On the label
Suggested use: As a dietary supplement for adults, take one (1) capsule twice a day, preferably with meals or as directed by a healthcare practitioner.
Price check
$14.24
Cheaper than 68% of 375 vitamin C supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.
Not medical advice. Consult your healthcare professional.