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Gold C Vitamin C 500 mg

California Gold Nutrition
4.8
★ ★ ★ ★ ★
(35469 ratings)
Vitamin C 500 mg
Product Image
Score87
A practical 500 mg vitamin C capsule for simple daily use. It lacks buffering and any meaningful companion nutrients.
How scoring works
Quantity:240 Capsule(s) • (240 servings)
Goals:
General Health
Immunity
Skin Health
Anti-Inflammatory Support

Score 87

A practical 500 mg vitamin C capsule for simple daily use. It lacks buffering and any meaningful companion nutrients.
How scoring works
$13.35($0.05 per serving)
iHerb
$ 13.35
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Analysis

A 500 mg capsule offers a practical middle ground between dietary intake and very high-dose products. The amount supports normal antioxidant, collagen, and immune functions without reaching the upper end of common supplement servings.

The single-active design is simple to understand and the large bottle suits routine use. No mineral buffer, bioflavonoid, or complementary nutrient is included.

Plain ascorbic acid can still cause discomfort in sensitive users, though the moderate amount may be easier to manage than a full gram. It fits straightforward supplementation more than specialized support.

Who is it for
  • Adults seeking a moderate vitamin C amount
  • Users who prefer capsules
  • People wanting a large routine supply
Best for
  • Everyday vitamin C support
  • Antioxidant and collagen support
  • Simple fixed dosing

Pros

  • Practical 500 mg amount
  • Single-active formula
  • Large capsule count

Cons

  • Unbuffered acidic form
  • No complementary nutrients
  • Fixed serving is less flexible than powder

Warnings

  • Plain ascorbic acid may cause stomach discomfort, especially when taken without food.

Nutrient quality

91 Highest impact

Ascorbic acid is established and absorbable but remains unbuffered and acidic. The vitamin C amount is meaningful and well suited to routine supplementation.

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Ingredient transparency

86 Highest impact

The single active ingredient has a specific amount. A complete inactive ingredient list was not supplied.

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Customer satisfaction

73 High impact

The available aggregate rating is strong for this category. No firsthand outcome details were supplied, so alignment with the intended use is uncertain.

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Value for money

95 Highest impact

The useful amount provides good quality for a basic vitamin C capsule. The product is highly competitive among plain vitamin C capsules.

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Goals

General Health
Impact
Highest effect
A- Goal FitA- Strength of SupportC CoverageA Formula Quality
Vitamin C · 500 mg

Vitamin C offers established antioxidant and collagen-supporting nutrition at a clearly stated daily amount. The simple capsule can help fill a specific dietary gap.

Plain ascorbic acid provides no buffering or enhanced delivery and addresses only one wellness pathway. The streamlined active profile remains transparent and free from distracting blends.

Study evidence
Vitamin C Supportive 56 studies
Immunity
Impact
Highest effect
A- Goal FitA- Strength of SupportD+ CoverageA+ Formula Quality
Vitamin C · 500 mg

Vitamin C directly supports antioxidant defenses and normal immune-cell function with a strong established evidence base. The focused single nutrient does not address vitamin D, zinc, mucosal support, or other immune pathways.

The amount meets the key target for immune-focused vitamin C supplementation. Plain ascorbic acid is fully disclosed but offers no buffering or enhanced-delivery feature.

Study evidence
Vitamin C Supportive 53 studies
Skin Health
Impact
High effect
B Goal FitB Strength of SupportD+ CoverageA Formula Quality
Vitamin C · 500 mg

Vitamin C supports collagen synthesis and antioxidant defense, giving the formula a clear but narrow skin-health role. A clearly disclosed plain ascorbic acid amount is adequate for routine use.

Plain ascorbic acid offers no buffering or enhanced delivery and may bother sensitive stomachs. A single vitamin C product does not directly supply collagen peptides, barrier lipids, or dedicated hydration actives.

Study evidence
Vitamin C Supportive 53 studies
Impact
Moderate effect
D+ Goal FitC+ Strength of SupportF CoverageA+ Formula Quality
Vitamin C · 500 mg

Plain vitamin C supplies a useful antioxidant amount that may help manage oxidative stress. The evidence is stronger for correcting low intake and supporting immune function than for controlling systemic inflammation.

No buffered form, absorption technology, or complementary anti-inflammatory active is present. The formula is transparent and efficient but very narrow for the selected goal.

Study evidence
Vitamin C Supportive 50 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid)
500 mg
Gluten Free Adults 18–50 Dairy Free Vegetarian
Report overview
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

A clearly labeled target-range dose makes the formula a simple source of vitamin C. Plain ascorbic acid lacks buffering or advanced delivery and may not suit every sensitive stomach. Cost efficiency is a major strength for shoppers who do not need a premium form.

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Sources

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

  1. Vitamin C intake and multiple health outcomes: an umbrella review of systematic reviews and meta-analyses.
    Xu K; Peng R; Zou Y; Jiang X; Sun Q; Song C · International journal of food sciences and nutrition · 2022
    Meta-analysis76 studies pooledGeneral Health forVitamin C
  2. 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
  3. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis.
    Bjelakovic G; Nikolova D; Gluud LL; Simonetti RG; Gluud C · JAMA · 2007
    Meta-analysis232,606 participants68 studies pooledGeneral Health forVitamin C
  4. 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
  5. Effect of Vitamin C Supplements on Respiratory Tract Infections: A Systematic Review and Meta-Analysis.
    Keya TA; Leela A; Fernandez K; Habib N; Rashid M · Current reviews in clinical and experimental pharmacology · 2022
    Meta-analysis10 studies pooledImmunity forVitamin C
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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