$8.99 $0.03 per serving
Product analysis
C 500 mg offers economical support for normal immune function and collagen formation when vitamin C intake is low. Regular use may modestly shorten colds.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality40
Both nutrient forms are identified, making their descriptions clear. Comparative form quality remains unresolved, so disclosure alone does not establish an advantage.
Ingredient Transparency100
Both amounts and forms are stated. The clear disclosure makes the vitamin C and calcium contributions easy to check.
Value For Money80
Vitamin C offers favorable value for the amount supplied. Calcium value remains unresolved, so the cost advantage is clearest for vitamin C.
Customer Satisfaction94
Customer ratings are very favorable across tens of thousands of reviews. The large review base provides substantial satisfaction feedback without proving health effects.
Product Focus68
Vitamin C provides the clearest nutritional role in normal immune function and collagen formation. Broader eye and inflammation findings do not establish the same effects from vitamin C alone.
- Format
Tablet - Container
- 250 Tablet(s)
- Per serving
- $0.03
- Also available
C 500 mg$4.82- Customer rating
- 4.8 · 35,640 ratings
Goals
Impact
High effect
Vitamin C · 500 mg
Vitamin C supports normal immune-cell activity and has modest evidence for shortening cold duration when used regularly. The 500 mg serving provides a meaningful amount within the supplied comparisons, although a serving does not establish a regular-use regimen. It does not promise infection prevention or treatment of an established cold, and the supplied context assigns no additional benefit to special vitamin C forms.
How this product is rated for Immunity
Ingredient fit60
Vitamin C is the relevant ingredient, with calcium broadening the formula beyond immunity. Its serving provides a partial amount against the saved comparison.
Goal fit
Vitamin C is relevant, while the formula also serves broader nutritional purposes.
Dose adequacy
The 500 mg serving meets the saved minimum but remains below the upper comparison amount.
Pathways40
Vitamin C gives the strongest support to innate immune-cell activity, with more limited barrier and antioxidant coverage.
Depth
Innate immune-cell activity is the strongest area.
Breadth
Only innate immune-cell activity reaches the saved coverage threshold.
Evidence100
Vitamin C provides the strongest evidence category used here, bounded to modest regular-use cold-duration support.
Evidence strength
Vitamin C supports modest shortening of colds with regular use, without a general prevention claim.
Studied preparation
The vitamin C preparation was accepted; no form superiority is established.
Formulation logic100
Vitamin C meets the saved minimum amount threshold, works without a required partner and triggers no configured conflict.
Partner coverage
Vitamin C does not require an additional partner.
Conflicts
No configured ingredient conflict was identified.
Effective doses
Vitamin C meets the saved minimum amount threshold.
Impact
High effect
Vitamin C · 500 mg
Vitamin C contributes to normal antioxidant and immune functions when intake is low. Its 500 mg serving provides a meaningful nutritional amount, without establishing infection prevention or extra benefit above adequate intake. The small calcium amount contributes little to the saved findings, so the practical focus remains vitamin C rather than broad mineral support.
How this product is rated for Everyday Health
Ingredient fit74
The selected serving provides a partial contribution against the saved amount references, with the recognized ingredients contributing to different degrees.
Goal fit
The relevant ingredients fit routine nutritional roles, although the product is linked to several health aims.
Dose adequacy
The selected serving provides a partial contribution against the saved amount references, with the recognized ingredients contributing to different degrees.
Pathways17
The strongest represented area is antioxidant and immune defence, reflecting the recognized ingredients and their amounts.
Depth
The strongest represented area is antioxidant and immune defence, reflecting the recognized ingredients and their amounts.
Breadth
No area reaches the saved substantial-coverage threshold, despite a relevant nutritional contribution.
Evidence74
Vitamin C provides the strongest recognized basis here; the supplied context still limits expectations for routine benefits in adequately nourished adults.
Evidence strength
Vitamin C provides the strongest recognized basis here; the supplied context still limits expectations for routine benefits in adequately nourished adults.
Studied preparation
The recognized preparations meet the saved check; this does not establish superiority of the named forms or broad clinical benefits.
Formulation logic100
None of the defined ingredient-conflict conditions was triggered by the supplied facts.
Partner coverage
The recognized ingredients can contribute independently or have their required partners present; no added combined benefit is established.
Conflicts
None of the defined ingredient-conflict conditions was triggered by the supplied facts.
Effective doses
All recognized ingredients meet the saved minimum amount threshold; this is not a proven clinical treatment threshold.
Impact
High effect
Vitamin C · 500 mg
Vitamin C supports collagen formation and wound healing when intake is low; added vitamin C has no established skin benefit when intake is adequate.
How this product is rated for Skin Health
Ingredient fit80
Ingredients relevant to skin health sit within a broader formula with other active ingredients. The relevant declared amounts fully meet or nearly meet the saved exposure comparison; this does not establish an optimal regimen.
Goal fit
Ingredients relevant to skin health sit within a broader formula with other active ingredients.
Dose adequacy
The relevant declared amounts fully meet or nearly meet the saved exposure comparison; this does not establish an optimal regimen.
Pathways0
No mapped pathway receives a contribution in the saved findings, although the ingredient findings remain separate.
Depth
No mapped pathway received a contribution in the saved findings, despite the separate ingredient findings.
Breadth
None of the mapped pathways meets the saved coverage threshold.
Evidence100
Vitamin C leads the saved evidence finding. Accepted preparation matches do not remove the ingredient-specific limitations described above.
Evidence strength
Vitamin C provides the leading evidence contribution in the saved comparison; its clinical limitations still apply.
Studied preparation
The saved finding accepts the preparations used for its included ingredients; it does not establish that every labelled preparation matches a clinical trial.
Formulation logic100
The saved checks find no missing required partner or configured conflict. The included amounts pass the minimum comparison screen.
Partner coverage
The included ingredients do not lack a required partner under the saved finding; this does not establish added benefit from combining them.
Conflicts
No configured ingredient conflict was triggered by the supplied facts.
Effective doses
All ingredients included in this amount screen meet its minimum comparison level; that level is not a proven effective dose.
Impact
Moderate effect
Vitamin C · 500 mg
The 500 mg of vitamin C provides antioxidant support relevant to oxidative stress. Evidence for lowering inflammatory markers is mixed, with a benefit signal mainly in people whose baseline inflammation was elevated.
How this product is rated for Inflammation
Ingredient fit60
Relevant ingredients share the formula with ingredients intended for other purposes, making the saved goal focus less concentrated. The assessed amounts provide partial support against the saved dose references; the saved dose assessment is 50 out of 100.
Goal fit
Relevant ingredients share the formula with ingredients intended for other purposes, making the saved goal focus less concentrated.
Dose adequacy
The assessed amounts provide partial support against the saved dose references; the saved dose assessment is 50 out of 100.
Pathways17
The strongest saved coverage concerns oxidative and mitochondrial stress, with partial coverage. No assessed mechanism reaches the saved threshold for broad coverage.
Depth
The strongest saved coverage concerns oxidative and mitochondrial stress, with partial coverage.
Breadth
No assessed mechanism reaches the saved threshold for broad coverage.
Evidence87
Vitamin C leads the saved evidence assessment at an assessed amount. The finding reflects the supplied comparison, not a promise of benefit. The saved assessment identifies the qualifying ingredients as matching its studied-preparation category.
Evidence strength
Vitamin C leads the saved evidence assessment at an assessed amount. The finding reflects the supplied comparison, not a promise of benefit.
Studied preparation
The saved assessment identifies the qualifying ingredients as matching its studied-preparation category.
Formulation logic100
The assessed ingredients can work independently or have their listed partner. All assessed ingredients reach the saved minimum dose threshold.
Partner coverage
The assessed ingredients can work independently or have their listed partner.
Conflicts
No ingredient conflict is recorded in the saved assessment.
Effective doses
All assessed ingredients reach the saved minimum dose threshold.
Impact
High effect
Vitamin C · 500 mg
Vitamin C supports antioxidant defenses relevant to eye tissues. Its supplied vision evidence comes from a defined multi-ingredient regimen for selected people with AMD, rather than vitamin C alone improving routine visual performance. The amount reaches the saved reference range, but higher intake does not establish greater visual benefit.
How this product is rated for Eye Health
Ingredient fit80
Vitamin C contributes within a broader formula.
Goal fit
Vitamin C contributes within a broader formula.
Dose adequacy
Vitamin C reaches the saved reference range.
Pathways47
Only retinal and lens antioxidant defense meets the saved coverage threshold.
Depth
The strongest saved contribution concerns retinal and lens antioxidant defense; this does not establish corresponding clinical improvement.
Breadth
Only retinal and lens antioxidant defense meets the saved coverage threshold.
Evidence68
Vitamin C’s evidence concerns a defined AMD combination, without established standalone routine visual-performance benefit.
Evidence strength
Vitamin C’s evidence concerns a defined AMD combination, without established standalone routine visual-performance benefit.
Studied preparation
The saved result recognizes the contributing forms as studied; this does not establish equivalence to a complete clinical eye-health regimen.
Formulation logic100
The counted ingredients meet the saved amount threshold and have no unmet partner requirement. No configured conflicts were identified.
Partner coverage
The counted ingredients have no unmet partner requirement in the supplied findings.
Conflicts
No configured ingredient conflict was identified in the supplied findings.
Effective doses
All counted contributors meet the saved amount threshold; this does not establish a proven routine vision dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ascorbic Acid) | 500 mg | |
Calcium (Calcium Carbonate) | 30 mg |
Vitamin C (Ascorbic Acid) · 500 mg OverallScore68
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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.