$12.99 $0.12 per serving
Product analysis
C-500 Complex supplies vitamin C for normal immune function and collagen formation, with the clearest nutritional benefit when intake is low.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality40
The vitamin C form and flavonoid sources are identified, but a firm absorption-quality comparison is unavailable. The flavonoid proportions remain unclear.
Ingredient Transparency80
Amounts and forms are identified, but the flavonoid proportions are undisclosed. That limits comparison of the mixture despite clear serving amounts.
Value For Money48
The vitamin C cost sits around the middle of its comparison. A missing flavonoid comparison leaves the value of the full combination uncertain.
Customer Satisfaction71
Customer ratings are favorable, but come from a small review pool. Reviews describe satisfaction without establishing effectiveness or safety.
Product Focus68
Vitamin C provides the clearest support for normal immune function and collagen formation. Regular use may modestly shorten colds, while eye and inflammation findings have narrower applicability.
- Format
Capsule - Container
- 100 Capsule(s)
- Per serving
- $0.12
- Customer rating
- 4.7 · 69 ratings
Goals
Impact
High effect
Vitamin C · 500 mg
Vitamin C supports normal immune function, and regular supplementation has modest support for shortening colds rather than preventing infection. A single serving does not establish the repeated use studied in trials.
How this product is rated for Immunity
Ingredient fit74
Vitamin C provide the focused contribution to immunity here. The relevant amounts provide uneven contributions relative to the supplied comparisons; smaller amounts limit some contributions.
Goal fit
Vitamin C provide the focused contribution to immunity here.
Dose adequacy
The relevant amounts provide uneven contributions relative to the supplied comparisons; smaller amounts limit some contributions.
Pathways40
The strongest contribution concerns innate immune cell activity, based on the relevant ingredients and their amounts. The main contribution is concentrated in one immune-related area.
Depth
The strongest contribution concerns innate immune cell activity, based on the relevant ingredients and their amounts.
Breadth
The main contribution is concentrated in one immune-related area.
Evidence100
Vitamin C has the strongest supported contribution here, with modest regular-use cold-duration evidence rather than infection prevention.
Evidence strength
Vitamin C has the strongest supported contribution here, with modest regular-use cold-duration evidence rather than infection prevention.
Studied preparation
The counted preparations meet the supplied preparation comparison, without establishing superior effects from their forms or delivery methods.
Formulation logic100
The counted ingredients can contribute independently or have the partners required by the supplied findings. No configured ingredient conflict was identified from the supplied facts.
Partner coverage
The counted ingredients can contribute independently or have the partners required by the supplied findings.
Conflicts
No configured ingredient conflict was identified from the supplied facts.
Effective doses
The counted ingredients all meet the minimum amount comparison; this does not establish infection-prevention or treatment doses.
Impact
Moderate effect
Vitamin C · 500 mg
Vitamin C at 500 mg contributes to normal immune function and antioxidant protection. Its everyday-health role is nutritional support, with benefit depending on how it fits into overall intake.
How this product is rated for Everyday Health
Ingredient fit60
Relevant nutritional or stress-related ingredients sit alongside ingredients aimed at other purposes. The assessed amounts provide partial coverage of the saved comparison references.
Goal fit
Relevant nutritional or stress-related ingredients sit alongside ingredients aimed at other purposes.
Dose adequacy
The assessed amounts provide partial coverage of the saved comparison references.
Pathways17
The strongest assessed connection is to antioxidant and immune defence. The saved findings show limited coverage across the assessed health functions.
Depth
The strongest assessed connection is to antioxidant and immune defence.
Breadth
The saved findings show limited coverage across the assessed health functions.
Evidence74
Vitamin C provides the strongest evidence contribution in the saved assessment. The assessed ingredients match the preparation categories used in the saved review.
Evidence strength
Vitamin C provides the strongest evidence contribution in the saved assessment.
Studied preparation
The assessed ingredients match the preparation categories used in the saved review.
Formulation logic100
The assessed ingredients can contribute individually or have their required companions present. No configured ingredient conflict was identified in the supplied assessment. All ingredients counted in this finding meet the saved minimum amount threshold.
Partner coverage
The assessed ingredients can contribute individually or have their required companions present.
Conflicts
No configured ingredient conflict was identified in the supplied assessment.
Effective doses
All ingredients counted in this finding meet the saved minimum amount threshold.
Impact
Moderate effect
Vitamin C · 500 mg
Vitamin C may help lower CRP, a marker of inflammation, when that marker is already elevated. A general reduction in inflammation isn't clear for adults without that condition. Taking a larger amount doesn't by itself mean you'll notice less pain or other inflammatory symptoms.
How this product is rated for Inflammation
Ingredient fit60
Vitamin C is the relevant ingredient, with benefits depending on the person's starting inflammation.
Goal fit
Vitamin C is the relevant ingredient, with benefits depending on the person's starting inflammation. Flavonoid (mixture has no distinct anti-inflammatory benefit identified here.
Dose adequacy
Vitamin C: 500 mg. These are label-serving amounts, not an assumed daily regimen.
Pathways17
The connection concerns oxidative stress, a process involving reactive molecules; it doesn't promise relief from inflammatory symptoms.
Depth
The connection concerns oxidative stress, a process involving reactive molecules; it doesn't promise relief from inflammatory symptoms.
Breadth
The connection is concentrated in oxidative stress rather than spanning several distinct inflammation-related processes.
Evidence87
Vitamin C's possible effect on CRP depends on elevated starting levels. The vitamin C form is identified, but buffered forms have no clear anti-inflammatory advantage.
Evidence strength
Vitamin C's possible effect on CRP depends on elevated starting levels.
Studied preparation
The vitamin C form is identified, but buffered forms have no clear anti-inflammatory advantage.
Formulation logic100
The relevant ingredient can act without an additional partner. No particular ingredient conflict is identified.
Partner coverage
No additional partner ingredient is required for the relevant ingredient’s individual role.
Conflicts
No particular ingredient conflict is identified.
Effective doses
Vitamin C: 500 mg. These are label-serving amounts, not an assumed daily regimen.
Impact
High effect
Vitamin C · 500 mg
Vitamin C is needed to form collagen, and correcting low intake can improve the impaired healing and skin fragility caused by deficiency. Extra vitamin C has no established skin benefit when intake is adequate. The serving amount does not establish better hydration, fewer wrinkles or improved UV protection.
How this product is rated for Skin Health
Ingredient fit80
Vitamin C provides the main relevant connection in this formula. Its declared amount reaches the supplied comparison range.
Goal fit
The formula includes relevant nutrient roles alongside ingredients serving other goals.
Dose adequacy
Vitamin C reaches the supplied exposure reference, without proving additional skin benefit at that amount.
Pathways0
No skin mechanism receives coverage in the supplied findings. Nutrient functions alone do not establish a routine cosmetic effect.
Depth
No pathway has a qualifying contribution in the supplied findings.
Breadth
No mechanism reaches the supplied coverage threshold.
Evidence100
Vitamin C leads the supplied evidence finding. The meaningful benefit is mainly nutritional adequacy, rather than established improvement in already well-nourished skin.
Evidence strength
Vitamin C leads this finding, but normal nutrient requirements do not establish extra skin benefit when intake is adequate.
Studied preparation
The qualifying nutrient declarations meet the supplied preparation criteria; forms alone do not establish greater cosmetic efficacy.
Formulation logic100
No required partner is missing and no specified formulation conflict is identified. This does not establish extra benefit from the combination.
Partner coverage
All counted ingredients work without an additional required partner or have that partner present.
Conflicts
No specified formulation conflict was matched in the supplied facts.
Effective doses
All ingredients counted for this finding clear its minimum exposure threshold, without establishing a clinically effective skin dose.
Impact
High effect
Vitamin C · 500 mg
Vitamin C is the relevant ingredient for antioxidant-related eye nutrition. Its clinical support comes from a defined AREDS combination in selected people with AMD, rather than vitamin C alone improving routine visual performance or preventing eye disease. The declared serving amount receives full recognition in the saved amount assessment, but this does not establish a proven standalone vision dose.
How this product is rated for Eye Health
Ingredient fit80
Vitamin C provide the relevant matches, alongside several ingredients serving other purposes. Vitamin C reaches the saved amount reference; larger amounts do not establish greater vision benefit.
Goal fit
Vitamin C provide the relevant matches, alongside several ingredients serving other purposes.
Dose adequacy
Vitamin C reaches the saved amount reference; larger amounts do not establish greater vision benefit.
Pathways47
The saved findings concentrate on retinal and lens antioxidant defense.
Depth
The saved findings concentrate on retinal and lens antioxidant defense.
Breadth
Only one area reaches the saved coverage threshold, leaving the other visual functions without comparable coverage.
Evidence68
Vitamin C's strongest clinical context is a complete AREDS regimen in selected AMD populations.
Evidence strength
Vitamin C's strongest clinical context is a complete AREDS regimen in selected AMD populations.
Studied preparation
The saved findings recognize the contributing preparations as studied; that does not extend population-specific trial benefits to everyone.
Formulation logic100
The saved findings identify no missing required partner or matching ingredient conflict.
Partner coverage
The saved findings identify no missing required partner among the contributing ingredients.
Conflicts
The zinc-without-copper concern is inapplicable because a required ingredient is absent.
Effective doses
Vitamin C meets the saved minimum amount threshold.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ascorbic Acid) | 500 mg | |
Citrus Bioflavonoids (Citrus spp., Hesperidin) | 139 mg |
Vitamin C (Ascorbic Acid) · 500 mg OverallScore58
Each serving provides 500 mg of vitamin C as ascorbic acid. The whole-product price works out to about $0.26 per gram of vitamin C.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
Ascorbic acid is the vitamin C source; it is an acidic form, with no buffering or stomach-friendly claim captured.
Vitamin C Chemical Form & Delivery System
Ascorbic acid is the vitamin C source; no advanced delivery claim is captured.
Gastric Comfort & pH Balance
Ascorbic acid is an acidic form, and the saved facts do not establish buffering or a stomach-friendly claim.
Dose, Safety & Label Transparency91
Each serving provides 500 mg of vitamin C. The amount and source are identified in the saved facts.
Optimal Dosage Targeting
Each serving provides 500 mg of vitamin C.
Purity & Excipient Quality
The other-ingredient panel includes standard excipients; no sweeteners, artificial colors or preservatives were flagged.
Mineral & Source Transparency
The vitamin C amount and ascorbic acid source are given; a matching mineral amount is not applicable.
Value50
The whole-product serving price works out to about $0.26 per gram of vitamin C.
Price per Gram of Vitamin C
The whole-product serving price works out to about $0.26 per gram of vitamin C.
Alternative products
Report alternatives
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.