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Pure Buffered Magnesium Ascorbate

NOW
4.8
★ ★ ★ ★ ★
(64 ratings)
Vitamin C 820 mg
Product Image
Score87
A clear, fully buffered magnesium ascorbate powder with flexible dosing and excellent core formulation quality. It remains a focused vitamin C product.
How scoring works
Quantity:8 Liquid(s) • (227 servings)
Goals:
General Health
Immunity
Skin Health
Anti-Inflammatory Support

Score 87

A clear, fully buffered magnesium ascorbate powder with flexible dosing and excellent core formulation quality. It remains a focused vitamin C product.
How scoring works
$15.60($0.06 per serving)
Pure Formulas
$ 16.32
Daily Vita
$ 15.60
Vitacost
$ 16.93
Walmart
$ 17.40
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Analysis

Magnesium ascorbate supplies substantial vitamin C in a completely buffered form that may improve stomach comfort. The magnesium contribution is listed separately, making both active amounts easy to understand.

Powder delivery supports flexible measurement and can be useful for people who avoid pills. The formula is concise and does not rely on proprietary blends or token botanical additions.

Support still centers on antioxidant, collagen, and immune pathways rather than broad vision or skin-barrier coverage. It fits users who want a high-quality buffered powder and are comfortable measuring each serving.

Who is it for
  • Users seeking premium buffered vitamin C
  • People who prefer powders over pills
  • Adults wanting clear magnesium ascorbate disclosure
Best for
  • Flexible buffered supplementation
  • Antioxidant support
  • Sensitive-stomach use

Pros

  • Fully buffered magnesium ascorbate
  • Separate vitamin C and magnesium amounts
  • Simple powder with flexible portions

Cons

  • Requires careful measuring
  • Nutrient breadth remains limited
  • Powder format is less portable than capsules

Warnings

  • Measure servings accurately because loose powder can be easy to overpour
  • The magnesium contribution may loosen stools in sensitive users
  • People with significant kidney impairment should seek guidance before using magnesium-containing supplements

Nutrient quality

93 Highest impact

The focused two-nutrient disclosure shows no active padding. The amount is high but not obviously excessive for a general vitamin C supplement.

Ingredient transparency

88 Highest impact

Vitamin C and elemental magnesium amounts are stated separately. A complete non-active ingredient statement is not shown.

Customer satisfaction

64 Moderate impact

The supplied aggregate rating indicates strong satisfaction. No complaint text is supplied, so repetitive negative themes cannot be assessed.

Value for money

99 Highest impact

A meaningful serving is available at a very low relative cost. The buffered form and substantial serving support excellent quality for the cost.

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Goals

General Health
General Health
Impact
Highest effect
A Goal FitA Strength of SupportB- CoverageA+ Formula Quality
Magnesium · 60 mgVitamin C · 820 mg

Magnesium ascorbate provides a strong buffered Vitamin C amount along with a modest magnesium contribution. Both nutrients support foundational functions, and their exact amounts are clearly disclosed.

The formula has broader value than plain Vitamin C but still concentrates on antioxidant and mineral support. Its simple powder design avoids weak accessory blends and makes the active contribution easy to assess.

Study evidence
Magnesium Supportive 114 studies
Vitamin C Supportive 56 studies
Immunity
Immunity
Impact
Highest effect
A Goal FitA+ Strength of SupportC+ CoverageA+ Formula Quality
Magnesium · 60 mgVitamin C · 820 mg

Magnesium ascorbate delivers a large buffered vitamin C amount for immune-cell, barrier, and antioxidant support. The accompanying magnesium adds a modest metabolic contribution.

Both vitamin C and mineral yield are clearly disclosed, and the buffered form may improve digestive tolerance. The powder remains focused on vitamin C rather than broad immune-pathway coverage.

Study evidence
Magnesium Supportive 8 studies
Vitamin C Supportive 53 studies
Skin Health
Skin Health
Impact
Highest effect
B+ Goal FitA Strength of SupportC CoverageA+ Formula Quality
Vitamin C · 820 mg

The focused formula supports collagen synthesis and antioxidant protection in the skin. Magnesium ascorbate provides complete buffering with separate mineral disclosure.

It does not provide collagen peptides, barrier lipids, or hydration-focused actives. The focused design is best suited to foundational collagen and antioxidant support.

Study evidence
Vitamin C Supportive 53 studies
Anti-Inflammatory Support
Cellular Defense
Anti-Inflammatory Support
Impact
High effect
B- Goal FitA Strength of SupportC- CoverageA Formula Quality
Vitamin C · 820 mg

Magnesium ascorbate supplies antioxidant support that may help limit oxidative stress linked with inflammatory signaling. The disclosed 820 mg serving provides a substantial Vitamin C amount.

Complete buffering and separate magnesium disclosure provide a clear and practical delivery design. The focused formula does not add a direct enzyme-modulating botanical or omega-3 pathway.

Study evidence
Magnesium Supportive 41 studies
Vitamin C Supportive 50 studies
Vision Support
Macular and Blue Light Defense
Vision Support
Impact
Moderate effect
F Goal FitB+ Strength of SupportF CoverageB+ Formula Quality
Vitamin C · 820 mg

Magnesium ascorbate supplies a high vitamin C amount for general antioxidant defense. The formula lacks lutein, zeaxanthin, DHA, zinc, and copper.

The buffered form and magnesium contribution are fully disclosed. Its strength lies in a single antioxidant pathway rather than targeted vision support.

Study evidence
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per serving
Vitamin C (Magnesium Ascorbate)
 820 mg
Magnesium (Magnesium Ascorbate)
 60 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Vitamin C (Magnesium Ascorbate) · 820 mg OverallScore93
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Pure magnesium ascorbate combines a preferred 820 mg Vitamin C dose with complete buffering. Separate magnesium disclosure supports excellent label clarity. The powder also delivers exceptional cost efficiency with very few listed components.

View ingredientView products
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89 Performance

Ester-C Plus 1000 mg Vitamin C

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<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. The added bioflavonoids broaden the formula beyond the original’s Magnesium Ascorbate-focused ingredient profile.</p>
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Buffered Gold C

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<p>The ingredient profile is a stronger fit for focused vitamin C support, supplying 1000 mg of vitamin C as Sodium Ascorbate. It provides at least as much vitamin C as the original while retaining a clearly disclosed active form.</p>
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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. The added bioflavonoids broaden the formula beyond the original’s Magnesium Ascorbate-focused ingredient profile.</p>
89 Budget

Pure Buffered Calcium Ascorbate

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<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 vitamin C amount matches or exceeds the original's 820 mg serving.</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 vitamin C amount matches or exceeds the original's 820 mg serving.</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 vitamin C amount matches or exceeds the original's 820 mg serving.</p>
93 Value

Sodium Ascorbate Capsules

NutriBiotic Immunity
<p>Strong serving value is paired with 850 mg of vitamin C as Sodium Ascorbate. It matches or exceeds the original’s vitamin C amount and keeps the active formula clearly disclosed, balancing cost-effectiveness with a useful ingredient profile.</p>
92 Value

Ester-C 500 mg With Citrus Bioflavoinds

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<p>Strong serving value is paired with 1000 mg of vitamin C as Ester-C Calcium Ascorbate with calcium and citrus bioflavonoids. It matches or exceeds the original’s vitamin C amount and adds disclosed bioflavonoids, balancing cost-effectiveness with a useful ingredient profile.</p>
92 Value

C-500 Calcium Ascorbate-C

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<p>Strong serving value is paired with 500 mg of vitamin C as Calcium Ascorbate with calcium and citrus bioflavonoids. It uses a lower vitamin C amount than the original and adds disclosed bioflavonoids, 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. Dietary magnesium intake is inversely associated with serum C-reactive protein levels: meta-analysis and systematic review.
    Dibaba DT; Xun P; He K · European journal of clinical nutrition · 2014
    Meta-analysis32,918 participants7 studies pooledAnti-Inflammatory Support forMagnesium
  2. Efficacy and safety of magnesium glycinate as add on therapy in hypomagnesemic asthma and chronic obstructive pulmonary disease patients: A randomised controlled study assessing inflammatory biomarkers.
    Maddirevula MK; Rajanandh MG; Wesley B · Pulmonary pharmacology & therapeutics · 2026
    Randomized trial224 participantsAnti-Inflammatory Support forMagnesium
  3. Magnesium Supplementation and the Effects on Wound Healing and Metabolic Status in Patients with Diabetic Foot Ulcer: a Randomized, Double-Blind, Placebo-Controlled Trial.
    Razzaghi R; Pidar F; Momen-Heravi M; Bahmani F; Akbari H; Asemi Z · Biological trace element research · 2018
    Randomized trial70 participantsAnti-Inflammatory Support forMagnesium
  4. The effect of long-term magnesium intake on inflammatory markers in patients with metabolic syndrome: a systematic review and meta-analysis of randomized controlled trials.
    Wang W; Wang J; Yang Y; Shi Y · Frontiers in nutrition · 2025
    Meta-analysis444 participants8 studies pooledAnti-Inflammatory Support forMagnesium
  5. Effect of Magnesium Supplementation on Inflammatory Parameters: A Meta-Analysis of Randomized Controlled Trials.
    Veronese N; Pizzol D; Smith L; Dominguez LJ; Barbagallo M · Nutrients · 2022
    Meta-analysis889 participants17 studies pooledAnti-Inflammatory Support forMagnesium
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. Perioperative systemic magnesium to minimize postoperative pain: a meta-analysis of randomized controlled trials.
    De Oliveira GS; Castro-Alves LJ; Khan JH; McCarthy RJ · Anesthesiology · 2013
    Meta-analysis1,257 participants20 studies pooledGeneral Health forMagnesium
  12. Long-term outcome after intravenous magnesium sulphate in suspected acute myocardial infarction: the second Leicester Intravenous Magnesium Intervention Trial (LIMIT-2).
    Woods KL; Fletcher S · Lancet (London, England) · 1994
    Randomized trial2,316 participantsGeneral Health forMagnesium
  13. Association of magnesium sulfate use with mortality in critically ill patients with sepsis: a retrospective propensity score-matched cohort study.
    Gu WJ; Duan XJ; Liu XZ; Cen Y; Tao LY; Lyu J; Yin HY · British journal of anaesthesia · 2023
    Cohort study10,999 participantsGeneral Health forMagnesium
  14. Hypomagnesemia and Mortality in Incident Hemodialysis Patients.
    Li L; Streja E; Rhee CM; Mehrotra R; Soohoo M; Brunelli SM; Kovesdy CP; Kalantar-Zadeh K · American journal of kidney diseases : the official journal of the National Kidney Foundation · 2016
    Cohort study9,359 participantsGeneral Health forMagnesium
  15. The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial.
    Jaripur M; Ghasemi-Tehrani H; Askari G; Gholizadeh-Moghaddam M; Clark CCT; Rouhani MH · Reproductive biology and endocrinology : RB&E · 2022
    Randomized trial64 participantsGeneral Health forMagnesium
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. Hypomagnesemia Is a Risk Factor for Infections after Kidney Transplantation: A Retrospective Cohort Analysis.
    Odler B; Deak AT; Pregartner G; Riedl R; Bozic J; Trummer C; Prenner A; Söllinger L; Krall M; Höflechner L; Hebesberger C; Boxler MS; Berghold A; Schemmer P; Pilz S; Rosenkranz AR · Nutrients · 2021
    Cohort study376 participantsImmunity forMagnesium
  22. Higher Intake of Dietary Magnesium Is Inversely Associated With COVID-19 Severity and Symptoms in Hospitalized Patients: A Cross-Sectional Study.
    Nouri-Majd S; Ebrahimzadeh A; Mousavi SM; Zargarzadeh N; Eslami M; Santos HO; Taghizadeh M; Milajerdi A · Frontiers in nutrition · 2022
    Cross-sectional study250 participantsImmunity forMagnesium
  23. Mg2+ regulates cytotoxic functions of NK and CD8 T cells in chronic EBV infection through NKG2D.
    Chaigne-Delalande B; Li FY; O'Connor GM; Lukacs MJ; Jiang P; Zheng L; Shatzer A; Biancalana M; Pittaluga S; Matthews HF; Jancel TJ; Bleesing JJ; Marsh RA; Kuijpers TW; Nichols KE; Lucas CL; Nagpal S; Mehmet H; Su HC; Cohen JI; Uzel G; Lenardo MJ · Science (New York, N.Y.) · 2013
    Single-arm trialImmunity forMagnesium
  24. Effect of magnesium on granulocyte function and on the exercise induced inflammatory response.
    Mooren FC; Golf SW; Völker K · Magnesium research · 2003
    Randomized trialImmunity forMagnesium
  25. Maternal and neonatal outcomes following magnesium sulfate in the setting of chorioamnionitis: a meta-analysis.
    Pergialiotis V; Sapantzoglou I; Rodolaki K; Varthaliti A; Theodora M; Antsaklis P; Thomakos N; Stavros S; Daskalakis G; Papapanagiotou A · Archives of gynecology and obstetrics · 2024
    Meta-analysis6,559 participants8 studies pooledImmunity forMagnesium
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C
  39. 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
  40. 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