$13.74 $0.05 per serving
Product analysis
Buffered Gold C offers good value for vitamin C’s normal immune and collagen functions, particularly when intake is low.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality40
Sodium ascorbate is identified as the vitamin C source. The buffered form does not establish an absorption advantage, and a separate quality comparison for sodium remains uncertain.
Ingredient Transparency100
The vitamin C and sodium amounts are clearly disclosed. Their shared sodium ascorbate source also makes the ingredient identities clear.
Value For Money88
The vitamin C amount is available at a favorable cost. Sodium does not have enough information for a separate value comparison.
Customer Satisfaction95
Customers report very high satisfaction across a very large review pool. That gives the satisfaction picture considerable breadth, without proving health effects.
Product Focus76
The formula is centered on vitamin C’s normal immune and antioxidant roles. Its other proposed uses have more limited or context-dependent support.
- Format
Capsule - Container
- 240 Capsule(s)
- Per serving
- $0.05
- Also available
Buffered Gold C$10.23- Customer rating
- 4.8 · 49,311 ratings
Goals
Impact
High effect
Vitamin C · 750 mg
Vitamin C supports antioxidant defenses. Its inflammation findings are limited: the overall trial was null, with a reduction in CRP confined to people whose CRP was elevated initially. This does not establish a broad anti-inflammatory benefit, and buffered forms have no established advantage.
How this product is rated for Inflammation
Ingredient fit84
Vitamin C provide the main connection to this goal. The included amounts provide only part of the supplied comparison range, limiting the amount-based contribution.
Goal fit
The formula centers on vitamin C, although its relevance extends beyond inflammation.
Dose adequacy
The included amounts provide only part of the supplied comparison range, limiting the amount-based contribution.
Pathways46
The strongest saved connection is to oxidative stress; this describes a mechanism-related finding rather than established symptom relief. Coverage is concentrated in one mechanism, leaving the other inflammation-related mechanisms unsupported in the saved findings.
Depth
The strongest saved connection is to oxidative stress; this describes a mechanism-related finding rather than established symptom relief.
Breadth
Coverage is concentrated in one mechanism, leaving the other inflammation-related mechanisms unsupported in the saved findings.
Evidence87
Vitamin C’s strongest relevant finding concerns elevated starting CRP, with no overall trial benefit.
Evidence strength
Vitamin C’s strongest relevant finding concerns elevated starting CRP, with no overall trial benefit.
Studied preparation
The saved findings recognize the included preparation, but matching a preparation does not remove the limits of its clinical evidence.
Formulation logic100
The supplied findings identify no missing required partner or matched conflict. The included amounts pass the minimum comparison threshold, which does not prove clinical effectiveness.
Partner coverage
The included ingredients do not require an additional partner in the supplied findings; this does not demonstrate synergy.
Conflicts
No ingredient conflict was identified by the supplied checks; these checks do not establish comprehensive safety.
Effective doses
All ingredients retained in the amount-based findings pass the minimum comparison threshold; that threshold is not a proven effective dose.
Impact
High effect
Vitamin C · 750 mg
Vitamin C contributes to normal antioxidant and immune functions when dietary intake is low. Its amount makes a partial contribution in the supplied comparison, concentrated in these related functions rather than broad general-health coverage. The supplied context does not establish infection prevention or additional benefit in people whose vitamin C intake is already adequate.
How this product is rated for Everyday Health
Ingredient fit84
The contributing ingredients supply partial amounts overall; this comparison does not establish a clinical benefit threshold.
Goal fit
The contributing ingredients are focused on general health, although the product is also linked to other goals.
Dose adequacy
The contributing ingredients supply partial amounts overall; this comparison does not establish a clinical benefit threshold.
Pathways45
The strongest contribution is in antioxidant and immune functions, with partial support in the supplied comparison. The meaningful contribution is concentrated in one area, limiting coverage of this broad goal.
Depth
The strongest contribution is in antioxidant and immune functions, with partial support in the supplied comparison.
Breadth
The meaningful contribution is concentrated in one area, limiting coverage of this broad goal.
Evidence74
Vitamin C leads the supplied evidence comparison; normal nutritional functions do not establish additional benefit when intake is adequate.
Evidence strength
Vitamin C leads the supplied evidence comparison; normal nutritional functions do not establish additional benefit when intake is adequate.
Studied preparation
The contributing ingredients with qualifying amounts match accepted preparations, without establishing superior effects from their particular forms.
Formulation logic100
All retained contributors reach the comparison’s minimum amount allowance; this is not a proven clinical treatment threshold.
Partner coverage
The contributing ingredients can act independently or have their required partners; an extra combination benefit is not established.
Conflicts
No configured ingredient conflict was identified in the supplied facts.
Effective doses
All retained contributors reach the comparison’s minimum amount allowance; this is not a proven clinical treatment threshold.
Impact
Highest effect
Vitamin C · 750 mg
Vitamin C supports normal immune function and can modestly shorten colds with regular supplementation. The 750 mg serving makes a substantial contribution to the saved amount comparison. Buffered vitamin C receives no assumed advantage over other forms, and the cold-duration findings do not establish prevention of infection or treatment of an established cold.
How this product is rated for Immunity
Ingredient fit84
Vitamin C contributes to the supplied ingredient findings. The contributing amounts meet the supplied comparisons to differing degrees.
Goal fit
The formula is focused on the contributing ingredients, though they may also serve other purposes.
Dose adequacy
The contributing amounts provide a partial overall match to the supplied comparisons; this does not measure the probability of benefit.
Pathways50
The strongest supplied connection is to innate immune cell activity. This describes the ingredients' assigned roles rather than an observed clinical outcome.
Depth
The strongest assigned connection is to innate immune cell activity, rather than a demonstrated change in infection outcomes.
Breadth
The supplied findings meaningfully cover one immune area.
Evidence100
Vitamin C leads the supplied evidence finding. Established nutrient roles and limited cold-duration findings do not establish general infection prevention.
Evidence strength
Vitamin C leads the evidence finding, with benefits bounded by its nutritional role or regular-use context.
Studied preparation
The contributing forms pass the supplied preparation check; no additional clinical advantage from a particular form is established.
Formulation logic100
The contributing ingredients have no missing required partner, and no listed formulation conflict was triggered.
Partner coverage
The contributing ingredients can act independently, so no missing required partner reduces their contribution.
Conflicts
No listed formulation conflict was triggered by the supplied facts.
Effective doses
All contributing ingredients meet the supplied minimum amount comparison; this is not proof of a clinically effective regimen.
Impact
High effect
Vitamin C · 750 mg
Vitamin C contributes to the antioxidant side of eye nutrition. Its relevant clinical evidence comes from a defined combination used in selected people with age-related macular degeneration, so this product does not establish improved everyday vision or prevention from vitamin C alone. A larger serving amount does not extend that evidence.
How this product is rated for Eye Health
Ingredient fit94
Vitamin C supplies a narrow connection to eye nutrition. The amount finding does not establish standalone visual-performance benefit.
Goal fit
Vitamin C is the main relevant ingredient, although its routine visual-performance role remains limited.
Dose adequacy
The included amounts meet the saved comparison’s amount references; this does not establish extra visual benefit at those amounts.
Pathways47
Antioxidant nutrition is the strongest represented aspect. Other visual functions have more limited support from the supplied ingredients and amounts.
Depth
The strongest represented aspect is retinal and lens antioxidant nutrition, rather than demonstrated improvement in eyesight.
Breadth
Support is concentrated in antioxidant nutrition, with limited representation of macular-pigment, focusing and other visual functions.
Evidence68
Vitamin C has eye-outcome evidence within a specific clinical combination. That evidence does not establish routine improvement from this product alone.
Evidence strength
Vitamin C’s eye-outcome evidence comes from a defined combination in selected AMD populations, which does not establish standalone routine benefit.
Studied preparation
The included forms satisfy the saved preparation checks; this does not transfer combination or disease-population outcomes to routine vision improvement.
Formulation logic100
The supplied partner and conflict checks identify no missing required partner or configured conflict. Amount thresholds describe the comparison and do not establish effective vision doses.
Partner coverage
No required partner is missing under the supplied formulation checks; this does not demonstrate added benefit from combining these ingredients.
Conflicts
No configured ingredient conflict was identified in the supplied checks.
Effective doses
All included contributions meet the saved amount threshold, which is a comparison reference rather than a proven effective vision dose.
Impact
High effect
Vitamin C · 750 mg
Vitamin C is needed for normal collagen formation, and correcting low intake can restore impaired wound healing. That nutritional role does not establish extra cosmetic improvement when intake is adequate. The serving reaches the saved amount reference, but higher amounts do not establish more skin benefit. The supplied oral trial did not improve UV redness, and the declared form does not establish a cosmetic advantage.
How this product is rated for Skin Health
Ingredient fit94
The relevant ingredients provide a focused skin-health connection. Declared amounts meet the saved exposure references.
Goal fit
Relevant ingredients dominate the skin-health fit; links to other goals broaden the product's focus.
Dose adequacy
Declared amounts meet the exposure references without proving a cosmetic benefit or greater benefit from higher amounts.
Pathways0
The saved findings concern nutritional roles, with no coverage assigned to the four assessed skin pathways.
Depth
None of the assessed collagen, water-binding, barrier-lipid or UV pathways received coverage.
Breadth
No assessed pathways reach the saved breadth threshold.
Evidence100
Vitamin C leads the saved evidence contribution. Included preparations satisfy the saved check, without proving routine cosmetic improvement.
Evidence strength
Vitamin C supplies the leading contribution, subject to its specific outcome and population limits.
Studied preparation
Included ingredients satisfy the saved preparation check; this does not prove efficacy of the finished product.
Formulation logic100
No required partner is missing and no configured conflict was matched. Included ingredients clear the minimum amount comparison.
Partner coverage
No required partner is missing from the included contributions.
Conflicts
No configured ingredient conflict was matched.
Effective doses
Included ingredients clear the minimum amount comparison; this is distinct from a proven skin-treatment dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Sodium Ascorbate) | 750 mg | |
Sodium (Sodium Ascorbate) | 95 mg |
Vitamin C (Sodium Ascorbate) · 750 mg OverallScore89
Each serving provides 750 mg of vitamin C as buffered sodium ascorbate. The whole-product price is about $0.08 per gram of vitamin C.
How this ingredient is rated
Active Ingredient Quality & Bioavailability83
Sodium Ascorbate is a buffered mineral form of vitamin C.
Vitamin C Chemical Form & Delivery System
The vitamin C comes as sodium ascorbate, a mineral ascorbate.
Gastric Comfort & pH Balance
Sodium Ascorbate is a buffered form of vitamin C.
Dose, Safety & Label Transparency91
A serving provides 750 mg of vitamin C. The available other-ingredient information has none of the additives flagged by this evaluation.
Optimal Dosage Targeting
A serving provides 750 mg of vitamin C.
Purity & Excipient Quality
The available other-ingredient information has none of the additives flagged by this evaluation.
Mineral & Source Transparency
The vitamin C and sodium amounts are both recorded; the sodium amount need not all come from the ascorbate.
Value100
Based on the whole-product price, vitamin C costs about $0.08 per gram.
Price per Gram of Vitamin C
Based on the whole-product price, vitamin C costs about $0.08 per gram.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- 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.
- 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.
- Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
- 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.
- 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.
- Role of Oral Vitamin 'C' on Astigmatic Errors in Phacoemulsification.
- Ascorbic acid metabolites are involved in intraocular pressure control in the general population.
- Nutritional modulation of cataract.
- Dietary n-3 Fatty Acid, α-Tocopherol, Zinc, vitamin D, vitamin C, and β-carotene are Associated with Age-Related Macular Degeneration in Japan.
- Adherence to a Mediterranean diet, lifestyle and age-related macular degeneration: the Coimbra Eye Study - report 3.
- 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.
- Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
- Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
- New evidence for antioxidant properties of vitamin C.
- Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
- Efficacy of Vitamin C as Glucocorticoid Substitute for Reducing Pain and Inflammation After Total Hip Arthroplasty: A Randomized Controlled Trial.
- The Impact of Vitamin C on Analgesic, Anti-inflammatory, and Hemostatic Outcomes After Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.
- The impact of vitamin C supplementation on the perioperative outcomes after total hip and knee arthroplasty: a systematic review and meta-analysis.
- Therapeutic Impact of Ascorbic Acid on Oral and Periodontal Tissues: A Systematic Literature Review.
- Oral vitamin C administration reduces early recurrence rates after electrical cardioversion of persistent atrial fibrillation and attenuates associated inflammation.