Pure Buffered Magnesium Ascorbate

Pure Buffered Magnesium Ascorbate

NOW4.8 (64 ratings)
Format:Powder Quantity: 8 Liquid(s) · 227 servings
Goals
$15.60 $0.06 per serving

Product analysis

70 out of 100

Pure Buffered Magnesium Ascorbate offers economical vitamin C support for normal immune function and collagen formation when intake is low. Regular vitamin C use may modestly shorten colds.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality40

Both nutrients are identified as magnesium ascorbate. The available information does not establish how their form quality compares with alternatives.

Ingredient Transparency100

Both amounts and forms are stated. The clear disclosure makes the vitamin C and magnesium contributions easier to check.

Value For Money79

Vitamin C offers favorable value for the amount supplied. Magnesium value remains unresolved, so the cost advantage is clearest for vitamin C.

Customer Satisfaction72

Customer ratings are very favorable, but the review base is small. The positive satisfaction pattern is therefore less established than for widely reviewed alternatives.

Product Focus76

Vitamin C provides the clearest nutritional role in immune function and collagen formation. Magnesium makes a smaller contribution, while broader inflammation and eye-health effects remain uncertain.

Format
Powder
Container
8 Liquid(s)
Per serving
$0.06
Customer rating
4.8 · 64 ratings
Report analysis

Goals

Everyday Health
Impact
High effect
A- Ingredient FitD PathwaysB- EvidenceA+ Formulation Logic
Magnesium · 60 mgVitamin C · 820 mg

Vitamin C can help fill a dietary gap and supports normal antioxidant and immune functions. Magnesium contributes a smaller amount and falls below the saved amount threshold. The supplied context does not establish extra protection against illness from the larger vitamin C amount when intake is adequate.

How this product is rated for Everyday Health

Ingredient fit87

The recognized ingredients are focused on the evaluated nutritional roles, although the product is also linked to other goals. The recognized amounts cover part of the saved comparison ranges; these ranges do not define personal requirements or a clinical response.
Goal fit
The recognized ingredients are focused on the evaluated nutritional roles, although the product is also linked to other goals.
Dose adequacy
The recognized amounts cover part of the saved comparison ranges; these ranges do not define personal requirements or a clinical response.

Pathways48

The strongest saved connection is normal antioxidant and immune functions; this describes ingredient roles rather than demonstrated improvement in overall health.
Depth
The strongest saved connection is normal antioxidant and immune functions; this describes ingredient roles rather than demonstrated improvement in overall health.
Breadth
1 evaluated areas reach the saved coverage threshold, led by normal antioxidant and immune functions.

Evidence74

Vitamin C leads the saved evidence finding; its nutritional contribution is conditional on inadequate intake.
Evidence strength
Vitamin C leads the saved evidence finding; its nutritional contribution is conditional on inadequate intake.
Studied preparation
The saved finding accepts the evaluated preparations; it does not establish superiority of a particular chemical form or delivery method.

Formulation logic100

No unmet partner requirement or configured conflict was detected, and the recognized ingredients reach the saved amount threshold.
Partner coverage
No recognized ingredient has an unmet partner requirement; an additional benefit from combining the ingredients is not established.
Conflicts
No configured ingredient conflict was detected in the supplied facts.
Effective doses
The recognized ingredients reach the saved amount threshold; this does not establish improved health outcomes.
Study evidence
Magnesium Supportive 114 studies
Vitamin C Supportive 56 studies
Immunity
Impact
Highest effect
A- Ingredient FitD+ PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 60 mgVitamin C · 820 mg

Vitamin C contributes to normal immune-cell function and may modestly shorten colds with regular use. This does not establish prevention of infection or treatment of an established cold, and a single selected serving does not establish the repeated regimen studied. The amount provides a substantial nutrient contribution without proving that higher intake brings greater benefit. The smaller magnesium amount is not independently counted.

How this product is rated for Immunity

Ingredient fit87

Vitamin C is a relevant contributor alongside the other counted ingredients. Their nutritional roles or limited regular-use evidence do not establish general infection prevention.
Goal fit
Vitamin C provides the main relevant contribution; the formula has no additional actives diluting this finding.
Dose adequacy
The counted amounts meet the saved comparison; substantial nutrient amounts do not establish larger immune benefits or a repeated daily regimen.

Pathways53

Innate immune-cell function is the strongest association. The broader findings span innate immune-cell function.
Depth
innate immune-cell function is the strongest association in the saved findings; this is not a prediction of protection against infection.
Breadth
innate immune-cell function meet the breadth comparison; coverage describes ingredient roles rather than clinical protection.

Evidence100

Vitamin C has limited evidence for modestly shorter colds with regular use; infection prevention and single-serving treatment effects are not established.
Evidence strength
Vitamin C has limited evidence for modestly shorter colds with regular use; infection prevention and single-serving treatment effects are not established.
Studied preparation
The counted preparations meet the saved preparation finding; no added clinical benefit from buffered, liposomal or named salt forms is established.

Formulation logic100

The counted ingredients meet the amount and partner checks, with no evaluated ingredient conflict triggered. This does not establish synergy or overall suitability.
Partner coverage
Every counted ingredient works independently or has its required partner; this does not establish extra benefit from combining them.
Conflicts
None of the evaluated combinations triggered a conflict finding; this does not establish overall suitability.
Effective doses
All independently counted ingredients meet the amount check; smaller present ingredients may be outside this finding.
Study evidence
Magnesium Supportive 8 studies
Vitamin C Supportive 53 studies
Skin Health
Impact
High effect
B Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Vitamin C · 820 mg

Vitamin C supports collagen formation and helps restore impaired wound healing when intake is low. Extra vitamin C has no established skin benefit when intake is adequate. The calcium ascorbate form does not establish an additional cosmetic benefit.

How this product is rated for Skin Health

Ingredient fit80

The relevant skin ingredients sit within a broader formula serving other purposes. The declared amount reaches the saved amount benchmark; this does not establish additional cosmetic benefit.
Goal fit
The relevant skin ingredients sit within a broader formula serving other purposes.
Dose adequacy
The declared amount reaches the saved amount benchmark; this does not establish additional cosmetic benefit.

Pathways0

The contribution concerns nutritional support rather than demonstrated coverage of collagen structure, hydration, barrier lipids or UV-response outcomes.
Depth
The contribution concerns nutritional support rather than demonstrated coverage of collagen structure, hydration, barrier lipids or UV-response outcomes.
Breadth
No skin outcome pathway reaches the saved coverage threshold.

Evidence100

Vitamin C leads the saved evidence findings; its clearest skin role is correcting low intake, rather than improving already adequate nutrition.
Evidence strength
Vitamin C leads the saved evidence findings; its clearest skin role is correcting low intake, rather than improving already adequate nutrition.
Studied preparation
The saved findings recognize the declared forms; form recognition does not prove extra cosmetic benefit from these nutrients.

Formulation logic100

The credited ingredients have no unmet partner requirement or matched conflict in the saved findings. Their amounts pass the saved minimum inclusion check.
Partner coverage
The credited ingredients are treated as able to contribute independently or as having their required partner.
Conflicts
No configured ingredient conflict was matched in the supplied findings.
Effective doses
The credited ingredient amounts pass the saved minimum inclusion check; this is not a proven effective skin dose.
Study evidence
Vitamin C Supportive 53 studies
Impact
Highest effect
A- Ingredient FitD PathwaysA- EvidenceA+ Formulation Logic
Vitamin C · 820 mg

Vitamin C provides the main connection to oxidative stress. Its inflammatory-marker benefit was limited to people with elevated baseline inflammation in the supplied trial, which found no benefit overall. The magnesium amount is too small to contribute meaningfully to these findings.

How this product is rated for Inflammation

Ingredient fit87

Vitamin C is the main relevant ingredient. The declared amount supports the saved contribution, subject to the ingredient’s specific evidence limits.
Goal fit
Vitamin C provides the main relevant ingredient focus, with a relatively focused formula.
Dose adequacy
820 mg of vitamin C per serving provides a partial amount comparison with the reviewed exposure.

Pathways48

The contribution is concentrated in oxidative and mitochondrial stress, rather than broad coverage of the assessed inflammatory routes.
Depth
Vitamin C supplies the main contribution in oxidative and mitochondrial stress.
Breadth
Only oxidative and mitochondrial stress reaches the coverage threshold; the other assessed routes add no coverage.

Evidence87

Vitamin C supplies the main evidence connection, with benefit conditional on elevated baseline inflammation in the supplied trial.
Evidence strength
Vitamin C leads the evidence finding; the supplied trial signal was confined to elevated baseline inflammation.
Studied preparation
The saved findings accept the vitamin C preparation; buffered forms have no established extra anti-inflammatory advantage.

Formulation logic100

Vitamin C can contribute independently, with no configured ingredient conflict identified.
Partner coverage
Vitamin C can contribute without a required companion ingredient.
Conflicts
No configured ingredient conflict was identified in the supplied findings.
Effective doses
Vitamin C meets the amount threshold used for inclusion; this is not a proven effective clinical dose.
Study evidence
Magnesium Supportive 41 studies
Vitamin C Supportive 50 studies
Impact
High effect
B Ingredient FitD PathwaysC+ EvidenceA+ Formulation Logic
Vitamin C · 820 mg

Vitamin C have evidence within a defined combination for selected people with age-related macular degeneration. This does not establish standalone prevention or improved visual performance from this product.

How this product is rated for Eye Health

Ingredient fit80

Vitamin C provide the principal vision connection. The amount comparison is distinct from evidence of routine vision improvement.
Goal fit
Vitamin C provide the relevant connection within a broader formula containing ingredients directed at other goals.
Dose adequacy
The relevant amounts meet the saved comparison exposures; this does not establish a proven dose for routine vision improvement.

Pathways47

The strongest connection is retinal and lens antioxidant defense. The other reviewed aspects of vision have limited coverage.
Depth
The main supplied mechanism is retinal and lens antioxidant defense, through Vitamin C. Mechanistic relevance alone does not demonstrate improved vision.
Breadth
Only one reviewed mechanism has meaningful coverage, leaving a narrow connection rather than support across several aspects of vision.

Evidence68

Vitamin C leads the evidence finding; preparation matches do not remove the population and combination limits.
Evidence strength
Vitamin C leads the saved evidence finding. Its clinical relevance remains limited to the specific populations and preparations described above.
Studied preparation
The included ingredients match preparations recognized in the saved comparison; this does not establish that the whole product matches a proven clinical regimen.

Formulation logic100

No missing required partner or matched conflict was identified. The relevant ingredients meet the saved amount threshold.
Partner coverage
The included ingredients can act independently or have their required partner; this does not establish an added vision benefit from combining them.
Conflicts
No conflict was identified by the supplied checks. This limited finding does not establish general product safety.
Effective doses
The included ingredients meet the saved amount threshold, which is not a proven minimum dose for improving vision.
Study evidence
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per servingScore
Vitamin C (Magnesium Ascorbate)
820 mg 89
Magnesium (Magnesium Ascorbate)
60 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
B+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value
Each serving provides 820 mg of vitamin C as buffered magnesium ascorbate. Based on the whole-product price, the cost is about $0.08 per gram of vitamin C.
How this ingredient is rated

Active Ingredient Quality & Bioavailability83

Vitamin C comes from magnesium ascorbate, a buffered mineral form.
Vitamin C Chemical Form & Delivery System
The vitamin C source is magnesium ascorbate, a mineral ascorbate.
Gastric Comfort & pH Balance
Magnesium ascorbate is a buffered form of vitamin C.

Dose, Safety & Label Transparency91

Each serving provides 820 mg of vitamin C, and its source is identified.
Optimal Dosage Targeting
Each serving provides 820 mg of vitamin C, an amount favored by this evaluation.
Purity & Excipient Quality
The available other-ingredient information has no flagged artificial colors or sweeteners.
Mineral & Source Transparency
The vitamin C amount, magnesium ascorbate source and magnesium amount are listed; the mineral need not all come from the ascorbate.

Value100

The whole-product price works out to about $0.08 per gram of vitamin C, a low cost in this comparison.
Price per Gram of Vitamin C
The whole-product price works out to about $0.08 per gram of vitamin C, a low cost in this comparison.
Report alternatives

Sources

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

  1. 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 pooledEveryday Health forMagnesium
  2. 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 participantsEveryday Health forMagnesium
  3. 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 participantsEveryday Health forMagnesium
  4. 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 participantsEveryday Health forMagnesium
  5. 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 participantsEveryday Health forMagnesium
  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 pooledEveryday 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 / consensusEveryday 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 participantsEveryday 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 participantsEveryday 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 participantsEveryday Health forVitamin C
  11. 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 participantsEye Health forVitamin C
  12. 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 studyEye Health forVitamin C
  13. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewEye Health forVitamin C
  14. 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 participantsEye Health forVitamin C
  15. 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 participantsEye Health forVitamin C
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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