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C 1000 mg

Swanson
4.8
★ ★ ★ ★ ★
(4834 ratings)
Vitamin C 1000 mg
Product Image
Score81
A high-value 1,000 mg vitamin C capsule with a small rose hip addition. Strong economy is balanced by a basic unbuffered form.
How scoring works
Quantity:250 Capsule(s) • (250 servings)
Goals:
Immunity
Skin Health
General Health
Vision Support
Anti-Inflammatory Support

Score 81

A high-value 1,000 mg vitamin C capsule with a small rose hip addition. Strong economy is balanced by a basic unbuffered form.
How scoring works

Also available as

2 options
Rose Hips 100.00mg • 250 Tablet(s) servings C 1000 mg • 250 Tablet(s) • 250 servings $18.39 ($0.07 per serving) 30 servings C 1000 mg • 30 Capsule(s) • 30 servings $5.29 ($0.17 per serving)
$19.79($0.07 per serving)
iHerb
$ 19.79
iHerb
$ 19.79
Report prices

Analysis

The 1,000 mg serving reaches the upper end of a practical daily vitamin C range. Plain ascorbic acid supplies the nutrient efficiently but offers no specialized delivery or stomach-comfort advantage.

Fifteen milligrams of a concentrated rose hip extract adds a small botanical component. Its contribution is secondary and does not substantially change the product's focused vitamin C role.

The large supply is convenient for long-term users and cost efficiency is a clear strength. Complete other-ingredient information is absent, limiting evaluation of capsule additives.

Who is it for
  • Regular high-dose vitamin C users
  • Budget-focused adults
  • People who prefer capsules
Best for
  • Long-term economical use
  • High-potency antioxidant support
  • Simple daily supplementation

Pros

  • Full 1,000 mg serving
  • Large capsule supply
  • Excellent value
  • Small rose hip extract addition

Cons

  • Unbuffered ascorbic acid
  • Rose hip amount is modest
  • Complete excipients are not provided

Warnings

  • The 1,000 mg amount may cause diarrhea or stomach upset
  • Users with a calcium oxalate kidney stone history should ask a clinician about daily high-dose vitamin C
  • Stacking it with other vitamin C products can unnecessarily increase total intake

Nutrient quality

76 High impact

Plain ascorbic acid is effective but unbuffered and not delivery-enhanced. The vitamin C amount is substantial, while the small rose hip extract contributes little.

Ingredient transparency

81 Highest impact

The active amounts and rose hip extraction ratio are clearly shown. Daily directions and a complete inactive-ingredient list are not supplied.

Customer satisfaction

72 High impact

The aggregate rating is very strong and supported by substantial volume. No review excerpts are supplied, so repeated complaints and purpose-specific experiences cannot be assessed.

Value for money

93 Highest impact

The large supply and strong vitamin C amount create excellent serving value. The token rose hip addition does not materially improve quality, but it adds little apparent cost.

Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A- Goal FitA Strength of SupportC CoverageA Formula Quality
Vitamin C · 1000 mg

A full vitamin C serving provides focused support for antioxidant defenses, collagen production, and normal immune function. The rose hip extract is compatible but contributes much less than the main vitamin.

Plain ascorbic acid is simple and well understood, though it offers no buffering for sensitive stomachs. Taking it with food or dividing the serving may improve comfort for people prone to stomach upset.

Study evidence
Vitamin C Supportive 53 studies
Skin Health
Skin Health
Impact
Highest effect
B+ Goal FitA Strength of SupportB- CoverageA- Formula Quality
Vitamin C · 1000 mg

Vitamin C directly supports collagen synthesis and antioxidant protection, giving it clear skin relevance. The high amount provides strong depth but no direct hydration or barrier-building ingredient.

Ascorbic acid is fully disclosed and established, though the unbuffered form may upset sensitive stomachs at 1,000 mg. The small rose hip extract adds little beyond the main vitamin C dose.

Study evidence
Vitamin C Supportive 53 studies
General Health
General Health
Impact
High effect
A- Goal FitB+ Strength of SupportC CoverageB+ Formula Quality
Vitamin C · 1000 mg

Ascorbic acid supplies 1000 mg of vitamin C for antioxidant, collagen, and normal immune functions. The amount is meaningful, but the unbuffered form may be uncomfortable for people with sensitive digestion.

The small rose hip extract adds limited practical breadth beside the main vitamin C dose. A complete other-ingredients list is not provided, so excipient quality cannot be assessed fully.

Study evidence
Vitamin C Supportive 56 studies
Vision Support
Vision Support
Impact
High effect
C+ Goal FitA Strength of SupportD CoverageB+ Formula Quality
Vitamin C · 1000 mg

Vitamin C supports ocular antioxidant defenses, but a standalone product is narrower than a complete vision formula. Vitamin C has an established role in studied antioxidant combinations, while evidence for vitamin C alone preserving vision is limited.

The 1,000 mg amount is substantial and comfortably supplies the antioxidant nutrient. The simple antioxidant design is coherent, although more vitamin C does not replace missing vision-specific carotenoids.

Study evidence
Vitamin C Disputed 24 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
C Goal FitA- Strength of SupportD+ CoverageB+ Formula Quality
Vitamin C · 1000 mg

Vitamin C provides a substantial antioxidant amount that may help limit oxidative damage associated with inflammatory activity. It is a supportive antioxidant rather than a direct modulator of major inflammatory enzymes.

The exact amount is clear, while basic ascorbic acid offers no buffering or enhanced delivery. The unbuffered 1,000 mg serving may cause stomach discomfort in sensitive users.

Study evidence
Vitamin C Supportive 50 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid)
 1000 mg
Rose Hips 4:1 extract
15 mg
Adults 18–50
Report overview
Vitamin C (Ascorbic Acid) · 1000 mg OverallScore66
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value

The full serving reaches the upper end of the preferred daily range and offers strong cost efficiency. Generic unbuffered ascorbic acid lacks enhanced delivery and may cause stomach discomfort in sensitive users. The active amount and chemical form are clear, although the provided data do not show the complete other-ingredients list.

View ingredientView products
Loading alternative details
89 Performance

Pure Buffered Calcium Ascorbate

NOW
A more performance-focused option combines 890 mg of vitamin C as Calcium Ascorbate with 100 mg of Calcium. Compared with the original's 1,000 mg of vitamin C as Ascorbic Acid, the smaller amount favors moderate daily use but provides less vitamin C per serving.
88 Performance

Buffered Gold C

California Gold Nutrition
A more performance-focused option combines 1,000 mg of vitamin C as Sodium Ascorbate with a focused single-nutrient formula. The amount matches the original, while Sodium Ascorbate replaces Ascorbic Acid and gives users a different disclosed form.
85 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
A more performance-focused option combines 1,000 mg of vitamin C as Ester-C with 108 mg of Calcium and 200 mg of Citrus Bioflavonoids Complex. The amount matches the original, while Ester-C replaces Ascorbic Acid and gives users a different disclosed form.
87 Budget

Pure Buffered Magnesium Ascorbate

NOW
The lower serving cost still provides 820 mg of vitamin C as Magnesium Ascorbate with 60 mg of Magnesium. Compared with the original's 1,000 mg of vitamin C as Ascorbic Acid, the smaller amount favors moderate daily use but provides less vitamin C per serving.
84 Budget

Ester-C 500 mg With Citrus Bioflavoinds

American Health
The lower serving cost still provides 1,000 mg of vitamin C as Ester-C Calcium Ascorbate with 110 mg of Calcium and 400 mg of Citrus Bioflavonoids Complex. The amount matches the original, while Ester-C Calcium Ascorbate replaces Ascorbic Acid and gives users a different disclosed form.
88 Budget

Sodium Ascorbate

NutriBiotic Immunity
The lower serving cost still provides 1,100 mg of vitamin C as Sodium Ascorbate with a focused single-nutrient formula. Compared with the original's 1,000 mg of vitamin C as Ascorbic Acid, the larger disclosed amount may better fit users seeking higher-potency vitamin C.
85 Value

C-500 With Rose Hips

NOW
The favorable serving cost pairs 500 mg of vitamin C as Ascorbic Acid with 40 mg of Rose Hips powder. Compared with the original's 1,000 mg of vitamin C as Ascorbic Acid, the smaller amount favors moderate daily use but provides less vitamin C per serving.
87 Value

100% Pure Vitamin C Powder

Swanson Premium Brand
The favorable serving cost pairs 1,000 mg of vitamin C as Ascorbic Acid with a focused single-nutrient formula. The vitamin C amount is similar to the original, while the added ingredients and label details determine the more useful fit.
87 Value

C 500 mg

Mason Natural
The favorable serving cost pairs 500 mg of vitamin C as Ascorbic Acid with a focused single-nutrient formula. Compared with the original's 1,000 mg of vitamin C as Ascorbic Acid, the smaller amount favors moderate daily use but provides less vitamin C per serving.
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