Vitamin C and Bio-Quercetin Phytosome
Goals
$7.50 $0.12 per serving
Product analysis
Vitamin C and Bio-Quercetin Phytosome supports normal immune and antioxidant functions, mainly through vitamin C. The vitamin C offers good value, but the quercetin preparation is not clearly specified for comparison.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality36
Vitamin C has a named form, but its relative quality remains uncertain. Quercetin lacks a specific form description for closer comparison.
Ingredient Transparency81
Both ingredient amounts are disclosed. Only vitamin C has a named form, leaving the quercetin description less complete.
Value For Money72
Vitamin C offers good value for the amount supplied. Quercetin’s value remains uncertain, so it does not establish an additional price advantage.
Customer Satisfaction92
Customer feedback is very positive. Several thousand ratings provide a broad view of satisfaction, without establishing health benefits.
Product Focus78
Normal immune and antioxidant functions are the clearest roles, especially when vitamin C intake is low. Regular vitamin C may modestly shorten colds, but added skin, eye or quercetin benefits are not established for routine use.
- Format
Tablet - Container
- 60 Tablet(s)
- Per serving
- $0.12
- Also available
Vitamin C and Bio-Quercetin Phytosome$20.25- Customer rating
- 4.8 · 8,197 ratings
Goals
Impact
High effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Impact
Highest effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ascorbic Acid) | 1000 mg | |
Bio-Quercetin Phytosome | 15 mg |
Vitamin C (Ascorbic Acid) · 1000 mg OverallScore64
A serving provides 1000 mg of vitamin C at a good cost per gram. It uses ascorbic acid, an unbuffered form.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
Vitamin C comes from ascorbic acid. Ascorbic acid is an unbuffered acid form.
Vitamin C Chemical Form & Delivery System
Vitamin C comes from ascorbic acid.
Gastric Comfort & pH Balance
Ascorbic acid is an unbuffered acid form.
Dose, Safety & Label Transparency91
A serving provides 1000 mg of vitamin C. The available other-ingredient panel has no flagged additives.
Optimal Dosage Targeting
A serving provides 1000 mg of vitamin C.
Purity & Excipient Quality
The available other-ingredient panel has no flagged additives.
Mineral & Source Transparency
The vitamin C amount and ascorbic acid source are stated.
Value80
The cost per gram of vitamin C is good.
Price per Gram of Vitamin C
The cost per gram of vitamin C is good.
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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.