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Vitamin C 1000 mg

4.8
★ ★ ★ ★ ★
(60 ratings)
Vitamin C 2000 mg
Product Image
Score62
A high-dose basic ascorbic acid capsule with a concerning mismatch between the name and listed serving. Verify the package before use.
How scoring works
Capsule
Quantity:120 Capsule(s) • (60 servings)
Goals:
Immunity
Skin Health
General Health
Anti-Inflammatory Support

Score 62

A high-dose basic ascorbic acid capsule with a concerning mismatch between the name and listed serving. Verify the package before use.
How scoring works
$19.95($0.33 per serving)
iHerb
$ 22.95
Pure Formulas
$ 19.95
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Analysis

The supplied ingredient record lists 2,000 mg of plain ascorbic acid, an amount at the common adult upper intake level. Such a large serving offers little practical advantage for routine users and is more likely to cause gastrointestinal effects.

The product name says 1,000 mg while the active listing says 2,000 mg. That conflict needs to be resolved from the physical package before deciding how many capsules to take.

Cost per gram is favorable, but the form is neither buffered nor enhanced. Users wanting flexible dosing or better stomach comfort would be better served by a lower-dose or mineral ascorbate option.

Who is it for
  • Experienced users specifically seeking a high serving
  • Adults able to verify the physical label
  • People who tolerate unbuffered vitamin C
Best for
  • High-potency vitamin C under informed use
  • Users who can divide or adjust servings
  • Cost-conscious high-dose supplementation

Pros

  • Simple single-active formula
  • High vitamin C amount
  • Good cost per gram

Cons

  • Product name and listed dose conflict
  • No buffering or advanced delivery
  • High amount reduces dosing flexibility

Warnings

  • Do not use the supplied serving information until the physical label confirms whether it provides 1,000 or 2,000 mg
  • A 2,000 mg serving can cause diarrhea, cramps, or nausea
  • People with calcium oxalate kidney stone risk or iron-overload conditions should seek professional guidance before high-dose vitamin C

Nutrient quality

59 Moderate impact

Plain ascorbic acid provides no buffering or delivery advantage. The supplied active amount reaches the adult upper limit and conflicts with the product name.

Ingredient transparency

59 Moderate impact

The active amount is stated, but it conflicts with the amount in the product name. Daily directions, inactive ingredients, and a specific chemical-form field are incomplete.

Customer satisfaction

64 Moderate impact

The aggregate rating is very strong, but the number of ratings is limited. No review excerpts are supplied, so repeated complaints and purpose-specific experiences cannot be assessed.

Value for money

68 High impact

A large amount per serving offers reasonable ingredient quantity for the cost. Basic form quality, excessive dosing, and label conflict sharply reduce practical value.

Report analysis

Goals

Immunity
Impact
High effect
A Goal FitD+ Strength of SupportD- CoverageA Formula Quality
Vitamin C · 2000 mg

Ascorbic acid provides direct antioxidant and immune-cell support at a large listed amount. The single-active formula offers clear depth without unrelated ingredients.

The product name and serving facts conflict with the listed active amount, so the package label should be checked before use. If the larger amount is correct, it may cause diarrhea and deserves caution for people prone to calcium oxalate kidney stones.

Study evidence
Vitamin C Supportive 53 studies
Skin Health
Impact
High effect
C+ Goal FitB- Strength of SupportD CoverageB+ Formula Quality
Vitamin C · 2000 mg

Vitamin C directly supports collagen synthesis and antioxidant defense, creating a credible but narrow skin fit. Its role in collagen formation is well established, although the product supplies no complementary skin active.

The vitamin C amount is substantial for routine supplemental use. Collagen-cofactor and antioxidant support are addressed through one nutrient.

Study evidence
Vitamin C Supportive 53 studies
General Health
Impact
Moderate effect
B Goal FitD+ Strength of SupportD CoverageB Formula Quality
Vitamin C · 2000 mg

Ascorbic acid provides a well-established antioxidant nutrient with relevance to immune and collagen function. The single-ingredient approach is focused, but it covers only one part of general health.

The listed active amount is very large and conflicts with the amount stated in the product name. That uncertainty, along with the unbuffered form, reduces confidence and may matter for digestive tolerance or kidney-stone-prone users.

Study evidence
Vitamin C Supportive 56 studies
Impact
Moderate effect
C+ Goal FitC- Strength of SupportD CoverageB+ Formula Quality
Vitamin C · 2000 mg

A large ascorbic acid serving provides focused antioxidant support that may help with oxidative stress. It does not add direct botanical, fatty-acid, or immune-regulating pathway coverage.

The supplied active amount conflicts with the product name and serving details, so the package label should be checked before use. The large unbuffered amount may cause digestive upset and deserves caution for people prone to calcium oxalate kidney stones.

Study evidence
Vitamin C Supportive 50 studies

Ingredients

IngredientAmount per serving
Ascorbic Acid
2000 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free Women
Report overview
Vitamin C · 2000 mg OverallScore51
F Active Ingredient Quality & BioavailabilityC- Dose, Safety & Label TransparencyB+ Value

A large ascorbic acid serving uses a basic, unbuffered form without enhanced delivery. The supplied serving facts and product name conflict with the listed active amount, so the package label should be checked before use. The large amount may cause diarrhea and deserves caution for people prone to calcium oxalate kidney stones, even though cost per gram is good.

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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