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Mild C 500 mg

4.9
★ ★ ★ ★ ★
(218 ratings)
Vitamin C 500 mg
Product Image
Score80
A gentle, moderate-dose calcium ascorbate capsule with clear mineral disclosure. It is focused and practical, though narrow and only average in value.
How scoring works
Capsule
Quantity:250 Capsule(s) • (250 servings)
Goals:
Immunity
General Health
Skin Health
Anti-Inflammatory Support
Vision Support

Score 80

A gentle, moderate-dose calcium ascorbate capsule with clear mineral disclosure. It is focused and practical, though narrow and only average in value.
How scoring works
$35.28($0.14 per serving)
iHerb
$ 35.28
Vitacost
$ 35.28
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Analysis

Calcium ascorbate supplies 500 mg of vitamin C in a buffered form that may be gentler than plain ascorbic acid. The accompanying 57 mg of calcium is clearly disclosed.

The formula gives focused antioxidant, immune, and collagen-related support without unnecessary active blends. A complete inactive-ingredient list is not included in the supplied data, which limits full label assessment.

It suits people with acid-sensitive stomachs who want a moderate capsule dose. The main benefit is tolerability rather than broad nutrient coverage or unusually strong value.

Who is it for
  • People sensitive to acidic vitamin C
  • Adults wanting a moderate capsule dose
  • Users preferring calcium ascorbate
Best for
  • Gentler vitamin C intake
  • Immune support
  • Collagen-related support

Pros

  • Fully buffered calcium ascorbate
  • Practical 500 mg vitamin C amount
  • Clear calcium amount
  • Large capsule supply

Cons

  • Narrow formula
  • Complete inactive-ingredient details are not supplied
  • Only average value

Warnings

  • The serving adds 57 mg of calcium, which may matter to users limiting supplemental calcium
  • Buffered vitamin C can still cause loose stools in sensitive users
  • People with reduced kidney function should review regular mineral-ascorbate use with their clinician

Nutrient quality

94 Highest impact

Calcium ascorbate supplies a well-regarded buffered form at a meaningful amount. The focused formula avoids low-value additions and fits the intended use closely.

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Ingredient transparency

84 Highest impact

Active names and amounts are clearly stated, with no hidden proprietary dose. Complete intake directions and a full inactive-ingredient list are not included in the supplied data.

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Customer satisfaction

70 High impact

Supplied satisfaction metrics indicate a strong result with a meaningful response pool. Detailed experience themes are absent, so recurring complaints and real-world purpose fit remain uncertain.

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Value for money

65 High impact

Serving value appears moderate relative to the disclosed form and amount. The focused formula avoids low-value extras.

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Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A Goal FitA+ Strength of SupportC CoverageA+ Formula Quality
Vitamin C · 500 mg

A useful vitamin C serving directly supports immune-cell function and antioxidant protection. Calcium ascorbate provides a fully buffered form that may be gentler on the stomach.

The label also states the accompanying calcium amount, making the active contribution easy to judge. Its narrow formula provides strong depth for one immune pathway rather than broad coverage.

Study evidence
Vitamin C Supportive 53 studies
General Health
General Health
Impact
Highest effect
A- Goal FitA+ Strength of SupportC+ CoverageA+ Formula Quality
Vitamin C · 500 mg

Calcium ascorbate supplies Vitamin C in a fully buffered form that may suit sensitive stomachs. The disclosed 500 mg Vitamin C amount provides substantial antioxidant and collagen-related nutritional support.

The capsule addresses one foundational nutrient rather than the full range of daily health needs. Its clearly stated mineral contribution and simple formula make it a focused, transparent option.

Study evidence
Vitamin C Supportive 56 studies
Skin Health
Skin Health
Impact
High effect
B- Goal FitA- Strength of SupportD+ CoverageA Formula Quality
Vitamin C · 500 mg

Vitamin C supports collagen synthesis and antioxidant protection at a useful amount. Buffered calcium ascorbate provides a clearly disclosed active, while the capsule offers a gentle and transparent conventional format.

Support remains concentrated on collagen cofactors and oxidative defense, with no additional skin pathways. The focused design is easy to understand but cannot provide structural proteins or barrier lipids by itself.

Study evidence
Vitamin C Supportive 53 studies
Anti-Inflammatory Support
Cellular Defense
Anti-Inflammatory Support
Impact
High effect
B- Goal FitA- Strength of SupportD+ CoverageA- Formula Quality
Vitamin C · 500 mg

Buffered Vitamin C provides useful antioxidant support in a gentle, clearly disclosed form. Its role is supportive rather than directly targeted to major inflammatory enzymes.

The simple capsule preserves dose depth and avoids unnecessary overlap. It fits focused oxidative-stress support better than broad inflammation-pathway coverage.

Study evidence
Vitamin C Supportive 50 studies
Vision Support
Macular and Blue Light Defense
Vision Support
Impact
High effect
C- Goal FitA- Strength of SupportD- CoverageA Formula Quality
Vitamin C · 500 mg

Buffered calcium ascorbate provides antioxidant support that may help protect ocular tissues from oxidative stress. Vitamin C alone does not supply macular pigments, structural omega-3 fats, or a complete evidence-based vision combination.

The disclosed amount is substantial for antioxidant support. Calcium ascorbate is fully buffered and clearly disclosed for good tolerance.

Study evidence
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per serving
Vitamin C (Calcium Ascorbate)
 500 mg
Calcium (Calcium Ascorbate)
 57 mg
Gluten Free Adults 18–50
Report overview
Vitamin C (Calcium Ascorbate) · 500 mg OverallScore79
B+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyD+ Value

Calcium ascorbate provides a useful, fully buffered Vitamin C serving. The elemental calcium amount is clear, although the supplied data do not include a complete inactive-ingredient list. Value is average for a gentle mineral-ascorbate capsule.

View ingredientView products
Loading alternative details
89 Performance

C-500 Calcium Ascorbate-C

NOW
The clearly disclosed vitamin C form provides a more focused alternative to the original buffered vitamin C formula. Its 500 mg of calcium ascorbate is buffered and includes 55 mg of calcium; the 10 mg bioflavonoid addition is modest.
88 Performance

Buffered Gold C

California Gold Nutrition
The clearly disclosed vitamin C form provides a more focused alternative to the original buffered vitamin C formula. Its 1,000 mg of sodium ascorbate is buffered and simply formulated, with 130 mg of sodium clearly disclosed.
88 Performance

Sodium Ascorbate Capsules

NutriBiotic Immunity
The clearly disclosed vitamin C form provides a more focused alternative to the original buffered vitamin C formula. Its capsules provide 850 mg of buffered sodium ascorbate with a clearly disclosed 100 mg sodium contribution.
85 Budget

C-500 With Rose Hips

NOW
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 500 mg of ascorbic acid with 40 mg of rose hips, although the vitamin C remains unbuffered.
83 Budget

C 500 mg

21st Century
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 500 mg of ascorbic acid with 30 mg of calcium in a basic, clearly dosed formula.
85 Budget

Gold C Vitamin C 1000 mg

California Gold Nutrition
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 1,000 mg of plain ascorbic acid without extra actives, favoring simplicity rather than buffering.
87 Value

100% Pure Vitamin C Powder

Swanson Premium Brand
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its powder provides 1,000 mg of ascorbic acid with flexible measuring, though the acidic form may not suit every user.
87 Value

C 500 mg

Mason Natural
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its single active is 500 mg of ascorbic acid, making the label easy to assess despite the lack of buffering.
88 Value

Sodium Ascorbate

NutriBiotic Immunity
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its 1,100 mg of sodium ascorbate is fully buffered, but the disclosed 120 mg of sodium matters for sodium-restricted users.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Efficacy of Vitamin C as Glucocorticoid Substitute for Reducing Pain and Inflammation After Total Hip Arthroplasty: A Randomized Controlled Trial.
    Jiang W; Xu H; Jiang X; Zhan Y; Ju Y; Xie J; Huang Z; Huang Q; Pei F · The Journal of bone and joint surgery. American volume · 2025
    Randomized trial107 participantsAnti-Inflammatory Support forVitamin C
  2. The Impact of Vitamin C on Analgesic, Anti-inflammatory, and Hemostatic Outcomes After Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.
    Moftakhari Hajimirzaei S; Bagherzadeh Cham M; Dolikhani M; Tabatabaee SM; Ebrahimpour A · The archives of bone and joint surgery · 2026
    Meta-analysis1,162 participants10 studies pooledAnti-Inflammatory Support forVitamin C
  3. The impact of vitamin C supplementation on the perioperative outcomes after total hip and knee arthroplasty: a systematic review and meta-analysis.
    Liu X; Guo J; Li Y; Yang Y; Liu M; Gao Q; Yang Y; Wu X; Yue C · BMC musculoskeletal disorders · 2026
    Meta-analysis852 participants8 studies pooledAnti-Inflammatory Support forVitamin C
  4. Therapeutic Impact of Ascorbic Acid on Oral and Periodontal Tissues: A Systematic Literature Review.
    Ruzijevaite G; Acaite E; Jagelaviciene E · Medicina (Kaunas, Lithuania) · 2025
    Systematic review811 participants17 studies pooledAnti-Inflammatory Support forVitamin C
  5. Oral vitamin C administration reduces early recurrence rates after electrical cardioversion of persistent atrial fibrillation and attenuates associated inflammation.
    Korantzopoulos P; Kolettis TM; Kountouris E; Dimitroula V; Karanikis P; Pappa E; Siogas K; Goudevenos JA · International journal of cardiology · 2005
    Randomized trial44 participantsAnti-Inflammatory Support forVitamin C
  6. 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.
    Aune D; Keum N; Giovannucci E; Fadnes LT; Boffetta P; Greenwood DC; Tonstad S; Vatten LJ; Riboli E; Norat T · The American journal of clinical nutrition · 2019
    Meta-analysis69 studies pooledGeneral Health forVitamin C
  7. 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.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusGeneral Health forVitamin C
  8. Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
    Sotomayor CG; Eisenga MF; Gomes Neto AW; Ozyilmaz A; Gans ROB; Jong WHA; Zelle DM; Berger SP; Gaillard CAJM; Navis GJ; Bakker SJ · Nutrients · 2018
    Cohort study598 participantsGeneral Health forVitamin C
  9. 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.
    Pu L; Zhang R; Wang X; Zhao T; Sun H; Han L · Frontiers in nutrition · 2022
    Cohort study12,530 participantsGeneral Health forVitamin C
  10. 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.
    Khaw KT; Bingham S; Welch A; Luben R; Wareham N; Oakes S; Day N · Lancet (London, England) · 2001
    Cohort study19,496 participantsGeneral Health forVitamin C
  11. 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.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusImmunity forVitamin C
  12. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
    Sun L; Zhao JH; Fan WY; Feng B; Liu WW; Chen RQ; Ban C; Dang AG; Wang M; Luo KT; Zhou GY; Yu FF; Ba Y · Nutrition reviews · 2024
    Meta-analysis2,334 participants14 studies pooledImmunity forVitamin C
  13. Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
    Abioye AI; Bromage S; Fawzi W · BMJ global health · 2021
    Meta-analysisImmunity forVitamin C
  14. New evidence for antioxidant properties of vitamin C.
    Vojdani A; Bazargan M; Vojdani E; Wright J · Cancer detection and prevention · 2001
    Randomized trial20 participantsImmunity forVitamin C
  15. Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
    Calder PC; Kreider RB; McKay DL · Nutrients · 2025
    Systematic review13 studies pooledImmunity forVitamin C
  16. Evaluation of the anti-wrinkle effect of an ascorbic acid-loaded dissolving microneedle patch via a double-blind, placebo-controlled clinical study.
    Lee C; Yang H; Kim S; Kim M; Kang H; Kim N; An S; Koh J; Jung H · International journal of cosmetic science · 2017
    Randomized trial23 participantsSkin Health forVitamin C
  17. Comparative Study on the Outcome of Periorbital Wrinkles Treated with Laser-Assisted Delivery of Vitamin C or Vitamin C Plus Growth Factors: A Randomized, Double-blind, Clinical Trial.
    Machado BHB; Frame J; Zhang J; Najlah M · Aesthetic plastic surgery · 2021
    Randomized trial149 participantsSkin Health forVitamin C
  18. Randomized trial of topical ascorbic acid in DMSO versus imiquimod for the treatment of basal cell carcinoma.
    Burke B; Bailie JE · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Randomized trial25 participantsSkin Health forVitamin C
  19. Vitamin C improves healing of foot ulcers: a randomised, double-blind, placebo-controlled trial.
    Gunton JE; Girgis CM; Lau T; Vicaretti M; Begg L; Flood V · The British journal of nutrition · 2022
    Randomized trial16 participantsSkin Health forVitamin C
  20. Dietary nutrient intakes and skin-aging appearance among middle-aged American women.
    Cosgrove MC; Franco OH; Granger SP; Murray PG; Mayes AE · The American journal of clinical nutrition · 2007
    Cross-sectional study4,025 participantsSkin Health forVitamin C
  21. Role of Oral Vitamin 'C' on Astigmatic Errors in Phacoemulsification.
    Mohan S; Sah K; Khattri M; Ahmad L; Sachan SK · Current eye research · 2021
    Randomized trial400 participantsVision Support forVitamin C
  22. Ascorbic acid metabolites are involved in intraocular pressure control in the general population.
    Hysi PG; Khawaja AP; Menni C; Tamraz B; Wareham N; Khaw KT; Foster PJ; Benet LZ; Spector TD; Hammond CJ · Redox biology · 2019
    Observational studyVision Support forVitamin C
  23. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C
  24. Dietary n-3 Fatty Acid, α-Tocopherol, Zinc, vitamin D, vitamin C, and β-carotene are Associated with Age-Related Macular Degeneration in Japan.
    Aoki A; Inoue M; Nguyen E; Obata R; Kadonosono K; Shinkai S; Hashimoto H; Sasaki S; Yanagi Y · Scientific reports · 2017
    Case-control study530 participantsVision Support forVitamin C
  25. Adherence to a Mediterranean diet, lifestyle and age-related macular degeneration: the Coimbra Eye Study - report 3.
    Raimundo M; Mira F; Cachulo MDL; Barreto P; Ribeiro L; Farinha C; Laíns I; Nunes S; Alves D; Figueira J; Merle BM; Delcourt C; Santos L; Silva R · Acta ophthalmologica · 2019
    Case-control study883 participantsVision Support forVitamin C