$4.82 $0.04 per serving
Product analysis
C 500 mg offers economical vitamin C support for normal collagen formation and immune function when 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
- 110 Tablet(s)
- Per serving
- $0.04
- Also available
C 500 mg$8.99- Customer rating
- 4.8 · 35,646 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 is needed to make collagen, and correcting deficiency can restore impaired wound healing. The declared amount meets the saved amount criteria, but extra vitamin C has no established skin benefit when intake is adequate. Standalone oral vitamin C has not shown improved UV redness in the supplied small trial.
How this product is rated for Skin Health
Ingredient fit80
Vitamin C supplies the relevant nutrient contribution and meets the saved amount criteria.
Goal fit
Vitamin C provides the relevant nutrient role, while the additional ingredient has no independent assessed skin contribution.
Dose adequacy
The declared amount meets the saved amount criteria; this does not prove an effective cosmetic dose.
Pathways0
No coverage was recorded for the listed cosmetic pathways, despite nutrient-related contributions.
Depth
No coverage was recorded for the listed cosmetic pathways, despite nutrient-related contributions.
Breadth
None of the listed cosmetic pathways reaches the saved coverage threshold.
Evidence100
Vitamin C leads the saved findings, but its established skin role concerns deficiency and normal collagen formation.
Evidence strength
Vitamin C leads the saved findings, but its established skin role concerns deficiency and normal collagen formation.
Studied preparation
The saved findings accept the forms of the contributing ingredients; this does not establish a tested cosmetic outcome for the whole product.
Formulation logic100
No required partner gap or configured conflict was recorded. The contributing ingredients meet the saved minimum amount criteria.
Partner coverage
No missing required partner was recorded for the contributing ingredients; this does not imply extra benefit from combining them.
Conflicts
No configured ingredient conflict was recorded.
Effective doses
All contributing ingredients reach the saved minimum amount threshold, which is not proof of clinical effectiveness.
Impact
Moderate effect
Vitamin C · 500 mg
Vitamin C at 500 mg provides antioxidant support relevant to oxidative stress. Supplied findings show a possible inflammatory-marker benefit in people with elevated starting levels, with less consistent support for adults in general.
How this product is rated for Inflammation
Ingredient fit60
The formula includes relevant ingredients alongside a broader range of purposes. The assessed amounts provide a partial match to the saved dose comparisons.
Goal fit
The formula includes relevant ingredients alongside a broader range of purposes.
Dose adequacy
The assessed amounts provide a partial match to the saved dose comparisons.
Pathways17
The strongest assessed connection is to oxidative and mitochondrial stress, with limited coverage in the saved findings. The saved findings show limited breadth across the main inflammation mechanisms.
Depth
The strongest assessed connection is to oxidative and mitochondrial stress, with limited coverage in the saved findings.
Breadth
The saved findings show limited breadth across the main inflammation mechanisms.
Evidence87
Vitamin C provides the strongest assessed evidence in the formula, with relevant but qualified support for this goal. The assessed ingredients at relevant amounts match preparations recognized in the saved findings.
Evidence strength
Vitamin C provides the strongest assessed evidence in the formula, with relevant but qualified support for this goal.
Studied preparation
The assessed ingredients at relevant amounts match preparations recognized in the saved findings.
Formulation logic100
All assessed contributors meet the saved minimum amount comparison. No ingredient conflicts were identified in the saved assessment.
Partner coverage
The assessed ingredients can contribute independently or have their required partner present.
Conflicts
No ingredient conflicts were identified in the saved assessment.
Effective doses
All assessed contributors meet the saved minimum amount comparison.
Impact
High effect
Vitamin C · 500 mg
Vitamin C contributes to antioxidant biology, which explains its connection to retinal and lens support. The supplied vision evidence comes from a defined multi-ingredient regimen in selected people with AMD. It does not establish that vitamin C alone improves routine visual performance or prevents eye disease. The serving reaches the saved amount range without making that clinical regimen equivalent.
How this product is rated for Eye Health
Ingredient fit80
Vitamin C supplies the saved vision-related connection alongside calcium.
Goal fit
Vitamin C supplies the saved vision-related connection alongside calcium.
Dose adequacy
Vitamin C reaches the saved amount range; larger amounts do not establish greater visual benefit.
Pathways47
Retinal and lens antioxidant defense is the strongest saved finding.
Depth
Retinal and lens antioxidant defense is the strongest saved finding.
Breadth
Antioxidant defense is the only substantially represented route.
Evidence68
Vitamin C leads the saved evidence finding. The declared vitamin C receives the saved studied-preparation finding, without establishing standalone visual benefit.
Evidence strength
Vitamin C leads the saved evidence finding; its clinical context limits conclusions about routine visual improvement.
Studied preparation
The declared vitamin C receives the saved studied-preparation finding, without establishing standalone visual benefit.
Formulation logic100
Vitamin C meets the saved amount threshold. No configured conflict was identified.
Partner coverage
Every credited ingredient works alone or has its required partner in the saved findings.
Conflicts
No configured ingredient conflict was identified in the saved findings.
Effective doses
Vitamin C meets the saved amount threshold.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ascorbic Acid) | 500 mg | |
Calcium (Calcium Carbonate) | 30 mg |
Vitamin C (Ascorbic Acid) · 500 mg OverallScore68
Each serving provides 500 mg of vitamin C as ascorbic acid. The whole-product price works out to about $0.09 per gram of vitamin C.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
The vitamin C is ascorbic acid, with no buffering claim recorded in the available facts.
Vitamin C Chemical Form & Delivery System
The recorded vitamin C form is ascorbic acid.
Gastric Comfort & pH Balance
No buffering or stomach-friendly claim is recorded for the vitamin C in the available facts.
Dose, Safety & Label Transparency91
A serving provides 500 mg of vitamin C.
Optimal Dosage Targeting
The stated amount is 500 mg of vitamin C per serving.
Purity & Excipient Quality
Routine excipients are recorded, with no flagged sweeteners or artificial colors in the available facts.
Mineral & Source Transparency
Both the vitamin C amount and its ascorbic acid form are recorded; no associated mineral amount is required for this form.
Value100
Based on the whole-product price, the cost is about $0.09 per gram of vitamin C.
Price per Gram of Vitamin C
Based on the whole-product price, the cost is about $0.09 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.