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Esterified Vitamin C 675 mg

4.8
★ ★ ★ ★ ★
(139 ratings)
Vitamin C 675 mg
Product Image
Score69
A potentially gentler mixed-form vitamin C tablet with useful potency. Confusing source labeling makes the exact dose composition hard to judge.
How scoring works
Tablet
Quantity:90 Tablet(s) • (90 servings)
Goals:
Skin Health
General Health
Immunity
Vision Support

Score 69

A potentially gentler mixed-form vitamin C tablet with useful potency. Confusing source labeling makes the exact dose composition hard to judge.
How scoring works
$25.03($0.27 per serving)
iHerb
$ 25.03
Pure Formulas
$ 25.03
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Analysis

The stated 675 mg vitamin C serving is substantial enough for antioxidant, immune, and collagen support. Calcium, magnesium, potassium, and zinc ascorbates suggest a buffered approach that may be gentler than plain ascorbic acid.

Ascorbyl palmitate adds a fat-soluble form, but the label does not show how the total is divided among the listed sources. Ginger is also presented as a vitamin C form, an unusual entry that further weakens clarity.

The product may appeal to users seeking mixed or buffered vitamin C forms. It is harder to compare with clearly allocated formulas, and the undisclosed mineral contributions matter for people monitoring sodium, potassium, or other electrolytes.

Who is it for
  • Adults seeking buffered vitamin C forms
  • Users who find plain ascorbic acid uncomfortable
  • People wanting a mixed-form tablet
Best for
  • Antioxidant support
  • Potentially gentler vitamin C intake
  • Collagen and immune nutrition

Pros

  • Several mineral ascorbate forms
  • Includes fat-soluble ascorbyl palmitate
  • Useful stated total amount
  • May be gentler than plain ascorbic acid

Cons

  • Contribution of each form is unclear
  • Ginger is oddly listed as a vitamin C form
  • Mineral amounts are not separately disclosed
  • Formula is difficult to compare precisely

Warnings

  • People with kidney disease or those managing potassium intake should clarify the potassium contribution before use.
  • The undisclosed mineral breakdown may matter to users on sodium- or electrolyte-restricted plans.
  • The unusual ginger listing makes sensitivity assessment less certain from the supplied data.

Nutrient quality

85 Highest impact

The varied ascorbate forms may support tolerance and delivery flexibility. Repeated full amounts across all forms make dose quality and balance difficult to confirm.

.

Ingredient transparency

56 Moderate impact

Several specific ascorbate forms are listed without a named proprietary blend. Repeated quantities, ambiguous ginger naming, absent excipients, and missing directions substantially limit clarity.

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Customer satisfaction

65 High impact

The aggregate satisfaction signal is strong, but the supporting volume is limited. Missing review details prevent assessment of recurring complaints or purpose fit.

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Value for money

69 High impact

Varied ascorbate forms provide some justification for moderate serving value. Ambiguous dose allocation and incomplete label details weaken comparison with clearer buffered formulas.

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Goals

Skin Health
Skin Health
Impact
Highest effect
A- Goal FitB+ Strength of SupportB- CoverageA- Formula Quality
Vitamin C · 675 mg

Vitamin C directly supports collagen synthesis and antioxidant protection, making it relevant to skin strength and environmental stress. The substantial serving is more than adequate to cover this cofactor need.

The blend of ascorbate forms may improve tolerability for some users, but the repeated labeling makes the contribution of each form unclear. A vitamin C-only formula does not provide collagen peptides, barrier lipids, or dedicated hydration support.

Study evidence
Vitamin C Supportive 53 studies
General Health
General Health
Impact
High effect
A- Goal FitA- Strength of SupportC CoverageB- Formula Quality
Vitamin C · 675 mg

A meaningful vitamin C amount supports antioxidant, collagen, and immune functions. Mineral ascorbates may improve buffering, while ascorbyl palmitate adds a fat-soluble form.

Identical amounts are repeated across several listed forms, and ginger is oddly presented as a vitamin C form. The total active amount and contribution of each source therefore need clearer labeling.

Study evidence
Vitamin C Supportive 56 studies
Immunity
Immunity
Impact
High effect
A- Goal FitB Strength of SupportC CoverageC+ Formula Quality
Vitamin C · 675 mg

Vitamin C supports antioxidant defenses, collagen formation, and normal immune function. Multiple mineral ascorbates and ascorbyl palmitate suggest a buffered, mixed-form approach.

The supplied data repeats the same vitamin C amount across six forms, so the contribution of each source is unclear. That ambiguity prevents a fully confident assessment of dose composition despite a practical stated total.

Study evidence
Vitamin C Supportive 53 studies
Vision Support
Vision Support
Impact
High effect
B- Goal FitA- Strength of SupportD+ CoverageB+ Formula Quality
Vitamin C · 675 mg

Vitamin C is concentrated in ocular fluids and contributes to antioxidant protection of the lens and retina. The 675 mg amount is substantial and uses several buffered or fat-soluble forms.

Vitamin C works best as one part of a broader eye-health pattern rather than a complete standalone formula. No lutein, zeaxanthin, zinc, vitamin E, or DHA is included to cover other major pathways.

Study evidence
Vitamin C Disputed 24 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
Moderate effect
C Goal FitC+ Strength of SupportD+ CoverageC Formula Quality
Vitamin C · 675 mg

Several vitamin C forms provide antioxidant support, with fat-soluble and mineral-ascorbate options that may improve tolerance or distribution. Vitamin C remains an indirect anti-inflammatory nutrient rather than a targeted pathway inhibitor.

The repeated 675 mg entries make it unclear whether they describe one total dose across several forms or separate contributions. That ambiguity and the lack of a strong second active limit confidence in both dose and breadth.

Study evidence
Vitamin C Supportive 50 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbyl Palmitate, Calcium Ascorbate, Ginger, Magnesium Ascorbate, Potassium Ascorbate, Zinc Ascorbate)
 675 mg
Gluten Free Adults 18–50 No Allergies Vegetarian
Report overview
Vitamin C (Ascorbyl Palmitate, Calcium Ascorbate, Ginger, Magnesium Ascorbate, Potassium Ascorbate, Zinc Ascorbate) · 675 mg OverallScore76
B+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyD+ Value

The 675 mg dose uses several buffered mineral ascorbates plus ascorbyl palmitate, offering a gentler alternative to plain ascorbic acid. The label does not reveal how the total is divided among the forms or how much mineral each provides. Cost efficiency is average despite the more sophisticated blend.

View ingredientView products
Loading alternative details
86 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
Ingredient and delivery quality improve with 1,000 mg of buffered Ester-C with 108 mg of calcium and 200 mg of citrus bioflavonoids. Compared with the original ascorbyl-palmitate formula, the substantial buffered dose and compatible bioflavonoids broaden support beyond plain ascorbic acid, although complete excipient details are not supplied.
86 Performance

C

Swanson
Ingredient and delivery quality improve with 1,000 mg of calcium ascorbate with 120 mg of calcium and 200 mg of citrus bioflavonoids. Compared with the original ascorbyl-palmitate formula, the buffered form and meaningful bioflavonoid amount offer a broader formula than plain ascorbic acid, although complete excipient details are not supplied.
84 Performance

Ester-C 500 mg With Citrus Bioflavoinds

American Health
Ingredient and delivery quality improve with 1,000 mg of buffered Ester-C with a broad citrus bioflavonoid complex. Compared with the original ascorbyl-palmitate formula, the formula adds several named citrus compounds while maintaining a substantial vitamin C amount, although the repeated complex entries make the exact internal amounts difficult to interpret.
89 Budget

Pure Buffered Calcium Ascorbate

NOW
A lower serving cost comes with 890 mg of vitamin C as buffered calcium ascorbate with 100 mg of calcium, compared with the original ascorbyl-palmitate formula. the mineral-bound form may be gentler than plain ascorbic acid and keeps the active formula focused, although the full inactive-ingredient panel is not supplied.
84 Budget

Ester-C 500 mg With Citrus Bioflavoinds

American Health
A lower serving cost comes with 1,000 mg of buffered Ester-C with a broad citrus bioflavonoid complex, compared with the original ascorbyl-palmitate formula. the formula adds several named citrus compounds while maintaining a substantial vitamin C amount, although the repeated complex entries make the exact internal amounts difficult to interpret.
88 Budget

Buffered Gold C

California Gold Nutrition
A lower serving cost comes with 1,000 mg of vitamin C as sodium ascorbate with 130 mg of sodium, compared with the original ascorbyl-palmitate formula. the simple buffered formula provides a full amount with no unrelated active ingredients, although the sodium contribution needs consideration on a restricted diet.
89 Value

C-500 Calcium Ascorbate-C

NOW
A stronger quality-to-cost balance comes from 500 mg of vitamin C as calcium ascorbate with 55 mg of calcium and 10 mg of citrus bioflavonoids. Compared with the original ascorbyl-palmitate formula, the buffered form supports stomach comfort while retaining a practical daily amount, while the bioflavonoid addition is small.
88 Value

Sodium Ascorbate

NutriBiotic Immunity
A stronger quality-to-cost balance comes from 1,100 mg of vitamin C as sodium ascorbate with 120 mg of sodium. Compared with the original ascorbyl-palmitate formula, the fully buffered powder provides a substantial, clearly disclosed amount, while careful measuring and sodium accounting remain important.
84 Value

Ester-C 24 Hour Immune Support 1000 mg

NatureSmart
A stronger quality-to-cost balance comes from 1,000 mg of buffered Ester-C with 110 mg of calcium and 102 mg of citrus bioflavonoids. Compared with the original ascorbyl-palmitate formula, the buffered form and bioflavonoids combine stomach-comfort potential with a focused vitamin C dose, while the supplied data do not include the complete inactive-ingredient panel.
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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
  24. 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
  25. 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
  26. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C
  27. 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
  28. 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