Ester-C 500 mg With Citrus Bioflavoinds
Goals
$25.89 $0.21 per serving
Product analysis
Ester-C 500 mg With Citrus Bioflavoinds offers good value for vitamin C to support normal immune function and collagen formation, especially when dietary intake is low.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality37
The vitamin C and calcium forms are identified, while their form quality remains uncertain. The citrus flavonoid mixture also lacks a clear form, making that addition harder to compare.
Ingredient Transparency88
Amounts are disclosed for the listed ingredients, and the main vitamin C form is clear. The flavonoid mixture is less precisely identified.
Value For Money74
The vitamin C contribution offers very good value. Value for the calcium and flavonoid additions remains uncertain, so the main buying case rests on vitamin C.
Customer Satisfaction96
Customer feedback is very positive across many thousands of ratings. The broad review base gives confidence in satisfaction without proving an immune or skin benefit.
Product Focus74
Vitamin C provides the clearest nutritional purpose through normal immune function and collagen formation. The additional ingredients do not establish stronger benefits when nutrient needs are already met.
- Format
Capsule - Container
- 240 Capsule(s)
- Per serving
- $0.21
- Also available
Ester-C 500 mg with Citrus Bioflavonoids$13.99- Customer rating
- 4.9 · 17,458 ratings
Goals
Impact
High effect
Vitamin C · 1000 mg
Vitamin C is the main nutritional contribution when intake is low. The supplied information does not establish an extra general-health benefit for Ester-C or citrus bioflavonoids. Calcium is declared, but its amount is below the saved inclusion threshold rather than absent.
How this product is rated for Everyday Health
Ingredient fit80
The relevant nutrients offer conditional nutritional support. Calcium is present but not counted at the declared amounts.
Goal fit
Relevant nutrients contribute to general health, while other ingredients serve purposes outside the supplied routine-health evidence.
Dose adequacy
Declared nutrient amounts make varying contributions to the saved comparison; larger quantities do not establish extra benefit when intake is adequate.
Pathways54
The strongest connection is antioxidant and immune defence. Coverage is concentrated in a limited set of functional areas.
Depth
The strongest ingredient association is with antioxidant and immune defence, reflecting nutrient availability rather than a demonstrated change in health outcomes.
Breadth
Coverage reaches the saved threshold in one functional area; the remaining areas receive less or no contribution.
Evidence74
Vitamin C leads the counted contribution. The supplied evidence supports a nutritional role when intake is low, without proving improved outcomes from this exact product.
Evidence strength
Vitamin C provides the strongest counted contribution; its relevance remains nutritional availability when intake is low, rather than proven improvement above adequacy.
Studied preparation
The counted preparations are accepted for the nutrient comparison. This does not establish an advantage for the chemical forms, delivery method or exact product.
Formulation logic100
The counted nutrients require no missing partner, and no configured conflict was found. Their combination does not establish an extra health benefit.
Partner coverage
All counted ingredients can contribute independently or have their required partner; no added benefit from combining them is established.
Conflicts
No configured conflict was found; the applicable nutrient amounts and partner declarations do not trigger the listed concerns.
Effective doses
All counted ingredients meet the saved inclusion threshold, which is a comparison boundary rather than a proven supplement-response dose.
Impact
Highest effect
Vitamin C · 1000 mg
Vitamin C provides the supported immune contribution, with modest regular-use evidence for shorter colds. The selected serving contains 1000 mg of declared vitamin C; citrus bioflavonoid and plant material amounts do not become additional vitamin C. Ester-C does not establish superior outcomes, and these findings do not show infection prevention or treatment from a single serving.
How this product is rated for Immunity
Ingredient fit80
Vitamin C provide the relevant immune contribution. The selected serving supplies a nutritional amount rather than a verified daily regimen.
Goal fit
The meaningful immune connection comes from vitamin c; other product uses do not establish additional immune outcomes.
Dose adequacy
The declared amount reaches the supplied comparison endpoint; it is not a proven prevention dose or biological limit.
Pathways60
The strongest contribution concerns innate immune-cell activity. One immune area has substantial representation.
Depth
Innate immune-cell activity is the strongest represented area.
Breadth
One immune area has substantial representation.
Evidence100
Vitamin C leads the evidence finding. Regular vitamin C use may modestly shorten colds; prevention and treatment from one serving are not established.
Evidence strength
Regular vitamin C use may modestly shorten colds; prevention and treatment from one serving are not established.
Studied preparation
The included preparations meet the supplied comparison; named forms and delivery methods do not establish superior clinical outcomes.
Formulation logic100
No configured ingredient conflict was identified; that finding is not an overall safety judgment. The included ingredients meet the amount threshold and have no missing required partner.
Partner coverage
The included ingredients work independently or have their required partner; this does not demonstrate extra benefit from combining them.
Conflicts
No configured ingredient conflict was identified; that finding is not an overall safety judgment.
Effective doses
The included ingredients meet the supplied amount threshold; this does not prove clinical effectiveness.
Impact
High effect
Vitamin C · 1000 mg
Vitamin C supports collagen formation and can restore impaired wound healing when intake is deficient. The 1000 mg calcium ascorbate serving receives full amount recognition in the saved result. Extra intake has no established skin benefit in adequately nourished adults, and buffering or fruit-source ingredients do not establish superior cosmetic effects or UV protection.
How this product is rated for Skin Health
Ingredient fit73
The included serving amount receives full recognition. Focus also depends on other actives and links to additional goals.
Goal fit
The relevant ingredients provide the recognized connection; other actives and links to additional goals reduce the product’s focus here.
Dose adequacy
The included serving amount receives full recognition in the saved comparison; this does not establish an optimal clinical dose.
Pathways0
The saved result assigns no coverage to its evaluated collagen, water-binding, barrier-lipid or UV routes. Nutrient deficiency roles remain distinct from those route findings.
Depth
No contribution is assigned to the evaluated collagen, water-binding, barrier-lipid or UV routes in the saved result.
Breadth
None of the evaluated routes receives coverage in the saved result.
Evidence100
Vitamin C leads the saved evidence finding; its supported skin role is deficiency correction, without established extra benefit when intake is adequate.
Evidence strength
Vitamin C leads the saved evidence finding; its supported skin role is deficiency correction, without established extra benefit when intake is adequate.
Studied preparation
The saved finding recognizes the included preparation as studied; that recognition does not resolve ingredient-specific applicability limitations.
Formulation logic100
No unmet partner or configured conflict was identified. Included ingredients meet the saved amount threshold.
Partner coverage
No unmet required partner is identified for the included ingredients; this does not establish synergy.
Conflicts
No configured ingredient conflict was matched in the supplied findings.
Effective doses
The ingredients included in this check meet its amount threshold, without establishing proven cosmetic improvement.
Impact
High effect
Vitamin C · 1000 mg
Vitamin C contributes to antioxidant biology, with a CRP reduction reported in a subgroup with elevated starting CRP rather than across the whole trial. This does not establish routine clinical anti-inflammatory benefit, and calcium ascorbate has no established anti-inflammatory advantage. Rutin remains unresolved because its stored declaration is missing from the imported inventory, so no amount or contribution was assumed.
How this product is rated for Inflammation
Ingredient fit73
The recognized anti-inflammatory ingredients sit within a broader formula, reducing its focus on this goal. The recognized amounts contribute fully to the saved comparison; this does not establish a proven clinical dose.
Goal fit
The recognized anti-inflammatory ingredients sit within a broader formula, reducing its focus on this goal.
Dose adequacy
The recognized amounts contribute fully to the saved comparison; this does not establish a proven clinical dose.
Pathways55
Oxidative and mitochondrial stress is the strongest recorded mechanism, without establishing broad clinical benefit.
Depth
Oxidative and mitochondrial stress is the strongest recorded mechanism, without establishing broad clinical benefit.
Breadth
Only one inflammatory mechanism reached the required coverage level.
Evidence87
Vitamin C leads the saved evidence finding, with its population and outcome limitations still applying.
Evidence strength
Vitamin C leads the saved evidence finding, with its population and outcome limitations still applying.
Studied preparation
Contributing preparations matched those recognized in the saved result; this does not establish a clinical trial of the complete product.
Formulation logic100
No missing required partner or configured conflict reduced the recognized contributions. All counted amounts reached the minimum comparison threshold.
Partner coverage
No missing required partner reduced the recognized contributions; this does not demonstrate extra benefit from combining ingredients.
Conflicts
No configured ingredient conflict was identified in the supplied calculation.
Effective doses
All counted ingredients reached the minimum comparison threshold, which is not a proven minimum effective clinical dose.
Impact
High effect
Vitamin C · 1000 mg
Vitamin C has an antioxidant role, but its vision evidence comes from a defined multi-ingredient AREDS regimen in selected macular-degeneration populations. Taking vitamin C alone does not establish prevention of eye disease or improved visual performance.
How this product is rated for Eye Health
Ingredient fit73
The relevant declarations provide mixed nutritional coverage for vision, with the amount findings reflecting the individual ingredients.
Goal fit
The formula includes relevant nutritional ingredients alongside ingredients serving other purposes.
Dose adequacy
The known amounts meet the supplied comparison references, without establishing a proven vision-effective dose.
Pathways47
The ingredients connect to selected vision-related processes, without demonstrating vision improvement through those mechanisms.
Depth
The main connection is to retinal and lens antioxidant defense, which does not itself establish improved hair growth.
Breadth
Coverage is concentrated in one vision-related process.
Evidence68
The strongest evidence contribution and preparation matches describe different aspects of the ingredients; neither guarantees vision improvement.
Evidence strength
Vitamin C supplies the strongest evidence contribution, subject to the ingredient’s specific limitations.
Studied preparation
Eligible declarations are recognized as studied forms; this does not establish improved vision in people with adequate nutrient intake.
Formulation logic100
The formula has no matched missing partner or listed conflict. The amount findings distinguish meaningful declarations from small or unresolved quantities.
Partner coverage
No required ingredient partner is missing from the supplied findings.
Conflicts
No listed ingredient conflict was matched; this finding does not establish the absence of every possible interaction.
Effective doses
The ingredients counted here clear the minimum comparison amount; that threshold is not a proven effective vision-effective dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ester-C Calcium Ascorbate) | 1000 mg | |
Calcium (Ester-C Calcium Ascorbate) | 110 mg | |
Citrus Bioflavonoids Complex | 400 mg |
Vitamin C (Ester-C Calcium Ascorbate) · 1000 mg OverallScore92
A serving supplies 1,000 mg of vitamin C as buffered Ester-C calcium ascorbate. The saved facts also record non-acidic and gentle-on-the-stomach claims.
How this ingredient is rated
Active Ingredient Quality & Bioavailability90
The vitamin C is Ester-C calcium ascorbate, a buffered mineral form.
Vitamin C Chemical Form & Delivery System
Vitamin C is recorded as Ester-C, a calcium ascorbate form.
Gastric Comfort & pH Balance
Calcium ascorbate is buffered; the saved facts also record non-acidic and gentle-on-the-stomach claims.
Dose, Safety & Label Transparency91
A serving provides 1,000 mg of vitamin C. The vitamin C source is recorded in the saved facts.
Optimal Dosage Targeting
A serving provides 1,000 mg of vitamin C.
Purity & Excipient Quality
No configured sweeteners, artificial colors or preservatives are flagged in the available ingredient facts.
Mineral & Source Transparency
The vitamin C amount, calcium ascorbate form and a calcium amount are recorded.
Value100
Whole-product serving costs correspond to about $0.22 per gram of vitamin C.
Price per Gram of Vitamin C
Whole-product serving costs correspond to about $0.22 per gram of vitamin C.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies.
- Scientific Opinion on the substantiation of a health claim related to vitamin C and increasing non haem iron absorption pursuant to Article 14 of Regulation (EC) No 1924/2006.
- Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
- Associations of Serum Biomarkers of Fruit and Vegetable Intake With the Risk of Cause-Specific Mortality and All-Cause Mortality: A National Prospective Cohort Study.
- Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition.
- Role of Oral Vitamin 'C' on Astigmatic Errors in Phacoemulsification.
- Ascorbic acid metabolites are involved in intraocular pressure control in the general population.
- Nutritional modulation of cataract.
- Dietary n-3 Fatty Acid, α-Tocopherol, Zinc, vitamin D, vitamin C, and β-carotene are Associated with Age-Related Macular Degeneration in Japan.
- Adherence to a Mediterranean diet, lifestyle and age-related macular degeneration: the Coimbra Eye Study - report 3.
- Vitamin C and contribution to the normal function of the immune system: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
- Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
- Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
- New evidence for antioxidant properties of vitamin C.
- Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
- Efficacy of Vitamin C as Glucocorticoid Substitute for Reducing Pain and Inflammation After Total Hip Arthroplasty: A Randomized Controlled Trial.
- The Impact of Vitamin C on Analgesic, Anti-inflammatory, and Hemostatic Outcomes After Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.
- The impact of vitamin C supplementation on the perioperative outcomes after total hip and knee arthroplasty: a systematic review and meta-analysis.
- Therapeutic Impact of Ascorbic Acid on Oral and Periodontal Tissues: A Systematic Literature Review.
- Oral vitamin C administration reduces early recurrence rates after electrical cardioversion of persistent atrial fibrillation and attenuates associated inflammation.