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Liquid Vitamin C 1000 mg Natural Citrus Flavors

4.7
★ ★ ★ ★ ★
(1690 ratings)
Vitamin C 6660 mg
Product Image
Score59
Liquid Vitamin C 1000 mg Natural Citrus Flavors delivers a meaningful vitamin C amount for focused antioxidant and collagen support. The liquid may suit people who avoid pills, but no stabilization advantage is disclosed and the supplied nutrition entries are inconsistent
How scoring works
Liquid
Quantity:8 Fluid Ounce(s) • (16 servings)
Goals:
Immunity
General Health
Anti-Inflammatory Support
Skin Health

Score 59

Liquid Vitamin C 1000 mg Natural Citrus Flavors delivers a meaningful vitamin C amount for focused antioxidant and collagen support. The liquid may suit people who avoid pills, but no stabilization advantage is disclosed and the supplied nutrition entries are inconsistent
How scoring works

Also available as

1 option
16 servings C 6660 mg, Carbohydrate 18 Gram(s) • 16 Fluid Ounce(s) • 32 servings $13.39 ($0.41 per serving)
$7.99($0.49 per serving)
Vitacost
$ 7.99
iHerb
$ 0.00
Pure Formulas
$ 7.99
Report prices

Analysis

Vitamin C supplies 6,660 mg, a meaningful amount for antioxidant defense, collagen formation, and normal immune function. Its strongest use is focused vitamin C support rather than broad daily nutrition.

Plain ascorbic acid is well established and easy to assess, but it is neither buffered nor paired with an enhanced delivery system. The single-nutrient design provides useful depth in one pathway but does not cover the breadth of a multinutrient formula.

The liquid may suit people who avoid pills, but no stabilization advantage is disclosed and the supplied nutrition entries are inconsistent Repeated vitamin C entries also make the contribution from each source unclear. Convenience comes at weaker value than many simple vitamin C tablets or capsules, but people seeking comprehensive vision, skin, or inflammation support will need other relevant nutrients.

Who is it for
  • Adults seeking focused vitamin C supplementation
  • People who prefer an easy-to-take alternative to standard pills
  • People prioritizing a clearly stated vitamin C amount
Best for
  • Antioxidant support
  • Collagen formation support
  • Filling a vitamin C intake gap

Pros

  • 6,660 mg vitamin C amount is clearly disclosed
  • Simple, easy-to-assess active formula
  • Focused support for antioxidant and collagen functions
  • Useful supplemental vitamin C range

Cons

  • Liquid stability and serving values are not fully clear
  • Vitamin C source split is not clearly quantified
  • No dedicated hydration, macular-pigment, or omega-fat support
  • Weaker value than many basic tablets or capsules

Warnings

  • Conflicting vitamin C and carbohydrate entries make the applicable serving values harder to verify.

Nutrient quality

68 High impact

The serving amount is useful, but the disclosed form offers little absorption or tolerance support. A heavy carbohydrate load weakens the otherwise relevant active profile.

.

Ingredient transparency

57 Moderate impact

Conflicting or repeated amount presentation makes the active breakdown difficult to assess. A complete inactive-ingredient list and full use directions are not included in the supplied facts.

.

Customer satisfaction

67 High impact

The aggregate rating is positive supported by substantial review volume. No specific feedback is supplied to confirm recurring complaints or purpose-related experiences.

.

Value for money

43 Lower impact

The format and short supply weaken value relative to simpler vitamin C products. Carbohydrate-heavy delivery or other format overhead reduces core ingredient efficiency.

.
Report analysis

Goals

Immunity
Immunity
Impact
High effect
A- Goal FitB Strength of SupportC CoverageC+ Formula Quality
Vitamin C · 6660 mg

A 1,000 mg vitamin C serving provides focused antioxidant and immune support at a meaningful amount. Vitamin C is well established nutritionally and may modestly shorten cold duration when used regularly.

The chemical form and stabilization method are not disclosed, which limits confidence in liquid-form quality. The carbohydrate-containing delivery also makes the formula less streamlined than a simple capsule or tablet.

Study evidence
Vitamin C Supportive 53 studies
General Health
General Health
Impact
High effect
A- Goal FitB Strength of SupportD+ CoverageC Formula Quality
Vitamin C · 6660 mg

A clearly stated vitamin C serving may support antioxidant defenses, collagen formation, and normal immune function. The liquid format offers convenience but provides no special evidence of improved stability or absorption.

The formula is focused enough to deliver useful depth in one foundational pathway. Its carbohydrate content and duplicate nutrition entries make it less streamlined and less transparent than a simple capsule or tablet.

Study evidence
Vitamin C Supportive 56 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
C Goal FitB Strength of SupportD CoverageB Formula Quality
Vitamin C · 6660 mg

A substantial vitamin C serving provides focused antioxidant support that may help limit oxidative stress linked with inflammation. The single-active approach is narrow and does not directly address COX, LOX, NF-kB, or pro-resolving lipid pathways.

The serving amount is useful, but the liquid format has no disclosed stabilization or enhanced delivery method. A notable carbohydrate load also makes the formula less streamlined than a simple capsule or tablet.

Study evidence
Vitamin C Supportive 50 studies
Skin Health
Skin Health
Impact
High effect
B+ Goal FitC Strength of SupportC- CoverageC+ Formula Quality
Vitamin C · 6660 mg

Vitamin C supports collagen synthesis and antioxidant protection, but the supplied label presents conflicting vitamin C and carbohydrate amounts. That inconsistency makes the true serving contribution harder to judge.

The stated 1000 mg serving would be more than adequate as a collagen cofactor. The liquid also provides carbohydrate without adding structural or hydration support.

Study evidence
Vitamin C Supportive 53 studies
Vision Support
Vision Support
Impact
Moderate effect
D Goal FitC- Strength of SupportF CoverageD+ Formula Quality
Vitamin C · 6660 mg

Vitamin C may support antioxidant protection in ocular tissues, and the stated serving includes a substantial amount. Conflicting vitamin C and carbohydrate entries make the applicable serving values difficult to interpret.

The liquid covers oxidative defense but provides no macular pigments, omega-3s, or coordinated vision minerals. Its narrow design and label ambiguity make it supplemental rather than comprehensive eye support.

Study evidence
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per serving
Calories
70 Calorie(s)
Total Carbohydrates
18 Gram(s)
Vitamin C
6660 mg
Gluten Free Adults 18–50 Kosher Halal Vegetarian
Report overview
Vitamin C · 6660 mg OverallScore41
F Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyF Value

A 1,000 mg serving reaches the preferred dose range. The liquid format has no disclosed stabilization, and its carbohydrate content makes it less clean than a simple capsule or tablet. Value is modest for generic vitamin C in a less stable delivery.

View ingredientView products
Loading alternative details
89 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
<p>The ingredient profile is a stronger fit for focused vitamin C support, supplying 1000 mg of vitamin C as Ester-C with calcium and citrus bioflavonoids. Compared with the original’s N/A, the mineral ascorbate form may be gentler and is more clearly aligned with focused vitamin C use.</p>
89 Performance

Buffered Gold C

California Gold Nutrition
<p>The ingredient profile is a stronger fit for focused vitamin C support, supplying 1000 mg of vitamin C as Sodium Ascorbate. Compared with the original’s N/A, the mineral ascorbate form may be gentler and is more clearly aligned with focused vitamin C use.</p>
88 Performance

C

Swanson
<p>The ingredient profile is a stronger fit for focused vitamin C support, supplying 1000 mg of vitamin C as Calcium Ascorbate with calcium and citrus bioflavonoids. Compared with the original’s N/A, the mineral ascorbate form may be gentler and is more clearly aligned with focused vitamin C use.</p>
89 Budget

Pure Buffered Calcium Ascorbate

NOW
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 890 mg of vitamin C as Calcium Ascorbate with calcium. The 890 mg amount is lower than the original's 6660 mg serving, so the trade-off is less vitamin C per serving. Its mineral ascorbate form may also be gentler than the original’s plain ascorbic acid.</p>
88 Budget

Sodium Ascorbate

NutriBiotic Immunity
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 1100 mg of vitamin C as Sodium Ascorbate. The 1100 mg amount is lower than the original's 6660 mg serving, so the trade-off is less vitamin C per serving. Its mineral ascorbate form may also be gentler than the original’s plain ascorbic acid.</p>
87 Budget

100% Pure Vitamin C Powder

Swanson Premium Brand
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 1000 mg of vitamin C as Ascorbic Acid. The 1000 mg amount is lower than the original's 6660 mg serving, so the trade-off is less vitamin C per serving.</p>
93 Value

Pure Buffered Magnesium Ascorbate

NOW
<p>Strong serving value is paired with 820 mg of vitamin C as Magnesium Ascorbate with magnesium. It uses a lower vitamin C amount than the original and adds a potentially gentler mineral ascorbate form, balancing cost-effectiveness with a useful ingredient profile.</p>
93 Value

Sodium Ascorbate Capsules

NutriBiotic Immunity
<p>Strong serving value is paired with 850 mg of vitamin C as Sodium Ascorbate. It uses a lower vitamin C amount than the original and adds a potentially gentler mineral ascorbate form, balancing cost-effectiveness with a useful ingredient profile.</p>
92 Value

Ester-C 500 mg With Citrus Bioflavoinds

American Health
<p>Strong serving value is paired with 1000 mg of vitamin C as Ester-C Calcium Ascorbate with calcium and citrus bioflavonoids. It uses a lower vitamin C amount than the original and adds a potentially gentler mineral ascorbate form, balancing cost-effectiveness with a useful ingredient profile.</p>
Report alternatives

Sources

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

  1. 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
  2. Effects of vitamin C on oxidative stress, inflammation, muscle soreness, and strength following acute exercise: meta-analyses of randomized clinical trials.
    Righi NC; Schuch FB; De Nardi AT; Pippi CM; de Almeida Righi G; Puntel GO; da Silva AMV; Signori LU · European journal of nutrition · 2021
    Meta-analysis313 participants18 studies pooledAnti-Inflammatory Support forVitamin C
  3. 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
  4. Antioxidant vitamin and mineral supplements for preventing age-related macular degeneration.
    Evans JR; Lawrenson JG · The Cochrane database of systematic reviews · 2018
    Meta-analysis55,614 participants4 studies pooledVision Support forVitamin C
  5. Vitamin C and postoperative outcomes following mandibular third molar extraction: a randomized split-mouth study.
    Demirel M; Aktas A; Kizil M; Yalcin N · Oral surgery, oral medicine, oral pathology and oral radiology · 2026
    Randomized trial56 participantsSkin Health forVitamin C
  6. Vitamin C supplementation in kidney failure: effect on uraemic symptoms.
    Singer RF · Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2011
    Randomized trial99 participantsGeneral Health forVitamin C
  7. Vitamin C for the management of COVID-19: a systematic review and meta-analysis of randomized controlled trials.
    Abid H; Mushtaq I; Munir ABI; Shakil J; Vinjamuri S; Tadasare N; Kiran F; Muhammad Wali Mirza A; Fatima Khidri F; Shahid A; Ayyan M; Ehsan M; Cheema HA; Alsubari AMA; Sahra S; Siddiqi NI · Annals of medicine and surgery (2012) · 2026
    Meta-analysis9 studies pooledGeneral Health Immunity forVitamin C
  8. A High Vitamin C Micronutrient Supplement Is Unable to Attenuate Inflammation in People with Metabolic Syndrome but May Improve Metabolic Health Indices: A Randomised Controlled Trial.
    Vlasiuk E; Zawari M; Whitehead R; Williman J; Carr AC · Antioxidants (Basel, Switzerland) · 2024
    Randomized trial72 participantsAnti-Inflammatory Support forVitamin C
  9. What did we learn in 35 years of research on nutrition and supplements for age-related macular degeneration: a systematic review.
    Pameijer EM; Heus P; Damen JAA; Spijker R; Hooft L; Ringens PJ; Imhof SM; van Leeuwen R · Acta ophthalmologica · 2023
    Systematic review27 studies pooledVision Support forVitamin C
  10. Association between hemoglobin A1c, Vitamin C, and microbiome in diabetic foot ulcers and intact skin: A cross-sectional study.
    Tong KPS; Green SJ; Ortiz J; Wu SC · Health science reports · 2024
    Cross-sectional study42 participantsSkin Health forVitamin C
  11. Serum vitamin C and spinal pain: a nationwide study.
    Dionne CE; Laurin D; Desrosiers T; Abdous B; Le Sage N; Frenette J; Mondor M; Pelletier S · Pain · 2017
    Cross-sectional study4,742 participantsGeneral Health forVitamin C
  12. Immunocompetence and oxidant defense during ascorbate depletion of healthy men.
    Jacob RA; Kelley DS; Pianalto FS; Swendseid ME; Henning SM; Zhang JZ; Ames BN; Fraga CG; Peters JH · The American journal of clinical nutrition · 1992
    Clinical trial8 participantsImmunity forVitamin C
  13. 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
  14. 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
  15. Prospective cohort study of antioxidant vitamin supplement use and the risk of age-related maculopathy.
    Christen WG; Ajani UA; Glynn RJ; Manson JE; Schaumberg DA; Chew EC; Buring JE; Hennekens CH · American journal of epidemiology · 1999
    Cohort study21,120 participantsVision Support forVitamin C
  16. 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
  17. 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
  18. 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
  19. 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
  20. Age-related macular degeneration and antioxidant status in the POLA study. POLA Study Group. Pathologies Oculaires Liées à l'Age.
    Delcourt C; Cristol JP; Tessier F; Léger CL; Descomps B; Papoz L · Archives of ophthalmology (Chicago, Ill. : 1960) · 1999
    Observational study2,584 participantsVision Support forVitamin C
  21. Vitamin C Intravenous Treatment In the Setting of Atrial Fibrillation Ablation: Results From the Randomized, Double-Blinded, Placebo-Controlled CITRIS-AF Pilot Study.
    Trankle CR; Puckett L; Swift-Scanlan T; DeWilde C; Priday A; Sculthorpe R; Ellenbogen KA; Fowler A; Koneru JN · Journal of the American Heart Association · 2020
    Randomized trial20 participantsAnti-Inflammatory Support forVitamin C
  22. 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
  23. 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
  24. The relationship of dietary carotenoid and vitamin A, E, and C intake with age-related macular degeneration in a case-control study: AREDS Report No. 22.
    Age-Related Eye Disease Study Research Group; SanGiovanni JP; Chew EY; Clemons TE; Ferris FL; Gensler G; Lindblad AS; Milton RC; Seddon JM; Sperduto RD · Archives of ophthalmology (Chicago, Ill. : 1960) · 2007
    Case-control study4,519 participantsVision Support forVitamin C
  25. 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
  26. Evaluating the effects of chlorhexidine and vitamin c mouthwash on oral health in non-surgical periodontal therapy: a randomized controlled clinical trial.
    Ozmeric N; Enver A; Isler SC; Gökmenoğlu C; Topaloğlu M; Selamet H; Altun G; Aykol Sayar S · Scientific reports · 2025
    Randomized trial60 participantsGeneral Health forVitamin C
  27. Intake of vitamin C, vitamin E, selenium, zinc and polyunsaturated fatty acids and upper respiratory tract infection-a prospective cohort study.
    Raposo SE; Fondell E; Ström P; Bälter O; Bonn SE; Nyrén O; Plymoth A; Bälter K · European journal of clinical nutrition · 2018
    Cohort study1,533 participantsImmunity forVitamin C
  28. Comparison of the Efficacy of Intralesional Ascorbic Acid Mesotherapy and Intralesional Tranexamic Acid in Treating Melasma in the Skin of Colour Population.
    Aslam H; Muhammad A; Ullah A; Aziz N; Lakhiar JA; Ahmad B; Shahzadi A; Ahmad A; Chandni; Virdi G · Cureus · 2025
    Randomized trial110 participantsSkin Health forVitamin C
  29. 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
  30. Vitamin C supplementation and C-reactive protein levels: Findings from a systematic review and meta-analysis of clinical trials.
    Safabakhsh M; Emami MR; Zeinali Khosroshahi M; Asbaghi O; Khodayari S; Khorshidi M; Alizadeh S; Viri EH · Journal of complementary & integrative medicine · 2024
    Meta-analysis818 participants11 studies pooledAnti-Inflammatory Support forVitamin C
  31. 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
  32. Efficacy and Safety of tranexamic acid versus vitamin c after microneedling in treatment of melasma: Clinical and Dermoscopic study.
    El Attar Y; Doghaim N; El Far N; El Hedody S; Hawwam SA · Journal of cosmetic dermatology · 2022
    Randomized trial20 participantsSkin Health forVitamin C
  33. Dietary intake and supplement use of vitamins C and E and upper respiratory tract infection.
    Fondell E; Bälter O; Rothman KJ; Bälter K · Journal of the American College of Nutrition · 2012
    Cohort study1,509 participantsImmunity forVitamin C
  34. 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
  35. Ascorbate for Organ Dysfunction in Critically Ill Patients With Sepsis: The Phase 2b ASTER Trial.
    Files DC; Matthay MA; Ware LB; Brower RG; Aggarwal NR; Brown SM; Chang SY; Douglas IS; Duggal A; Gibbs KW; Fields S; Foulkes AS; Ginde A; Goodwin A; Harris ES; Hendey GW; Hibbert K; Hite RD; Hough CL; Huang W; Khan A; Lai P; Liu KD; Miller C; Moskowitz A; Riker R; Robinson BRH; Self WH; Tidswell MA; Yealy DM; Thompson BT; Fowler AA · CHEST critical care · 2026
    Randomized trial79 participantsGeneral Health forVitamin C
  36. 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
  37. Comparative Evaluation of Locally Injected Dexamethasone with and Without Vitamin C in Mandibular Fractures: A Randomized Controlled Trial.
    Chincholkar A; Rudagi BM; Setiya S; Sakhariya S · Journal of maxillofacial and oral surgery · 2025
    Randomized trial30 participantsSkin Health forVitamin C
  38. Vitamin C supplementation and salivary immune function following exercise-heat stress.
    Carrillo AE; Murphy RJ; Cheung SS · International journal of sports physiology and performance · 2009
    Randomized trial12 participantsImmunity forVitamin C
  39. 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
  40. 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
  41. Comparative Efficacy of Ulinastatin and Vitamin C in Burn-associated Sepsis: A Randomized Controlled Trial.
    Kumar N; Singh A; Kumar R; Kumar M; Chaudhary AK · Annals of African medicine · 2026
    Randomized trial70 participantsAnti-Inflammatory Support forVitamin C
  42. Double-blind, half-face study comparing topical vitamin C and vehicle for rejuvenation of photodamage.
    Fitzpatrick RE; Rostan EF · Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] · 2002
    Non-randomized trial10 participantsSkin Health forVitamin C
  43. 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
  44. Vitamin C and the Lens: New Insights into Delaying the Onset of Cataract.
    Lim JC; Caballero Arredondo M; Braakhuis AJ; Donaldson PJ · Nutrients · 2021
    Narrative reviewVision Support forVitamin C
  45. Supplemental Vitamins and Minerals for Cardiovascular Disease Prevention and Treatment: JACC Focus Seminar.
    Jenkins DJA; Spence JD; Giovannucci EL; Kim YI; Josse RG; Vieth R; Sahye-Pudaruth S; Paquette M; Patel D; Blanco Mejia S; Viguiliouk E; Nishi SK; Kavanagh M; Tsirakis T; Kendall CWC; Pichika SC; Sievenpiper JL · Journal of the American College of Cardiology · 2021
    Meta-analysisGeneral Health forVitamin C
  46. Plasma C-reactive protein concentrations in active and passive smokers: influence of antioxidant supplementation.
    Block G; Jensen C; Dietrich M; Norkus EP; Hudes M; Packer L · Journal of the American College of Nutrition · 2005
    Randomized trial216 participantsAnti-Inflammatory Support forVitamin C
  47. Split-Face Comparative Analysis Of Micro-Needling With Tranexamic Acid Vs Vitamin C Serum In Melasma.
    Raza MH; Iftikhar N; Anwar A; Mashhood AA; Tariq S; Bin Hamid MA · Journal of Ayub Medical College, Abbottabad : JAMC · 2022
    Non-randomized trial30 participantsSkin Health forVitamin C
  48. The effect of macronutrient and micronutrient supplements on COVID-19: an umbrella review.
    SeyedAlinaghi S; Shahidi R; Mojdeganlou H; Akhtaran FK; Maroufi SF; Maroufi SP; Mirzapour P; Karimi A; Khodaei S; Pour MM; Mehraeen E; Dadras O · Journal of health, population, and nutrition · 2024
    Systematic review28 studies pooledImmunity forVitamin C
  49. Intake of key micronutrients and food groups in patients with late-stage age-related macular degeneration compared with age-sex-matched controls.
    Gopinath B; Liew G; Russell J; Cosatto V; Burlutsky G; Mitchell P · The British journal of ophthalmology · 2017
    Case-control studyVision Support forVitamin C
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C