Ester-C 24 Hour Immune Support 1000 mg
Goals
$14.12 $0.11 per serving
Product analysis
Ester-C 24 Hour Immune Support 1000 mg offers good value for vitamin C that supports normal immune function and collagen formation. Its name and added flavonoids do not establish longer-lasting support than other vitamin C options.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality37
The calcium ascorbate source is identified, but an advantage over other vitamin C forms is not established. The unspecified flavonoid mixture gives less detail for comparing the additional ingredients.
Ingredient Transparency88
The listed amounts and the vitamin C source are clear. The flavonoid preparation is unspecified, so that part is less easy to compare.
Value For Money74
The vitamin C contribution offers favorable value. The additional calcium and flavonoids have less certain value, keeping the main purchasing case centered on vitamin C.
Customer Satisfaction95
Customer ratings indicate very high satisfaction. A very large review pool gives that feedback a broad base.
Product Focus74
Vitamin C keeps the formula centered on normal immune, antioxidant and collagen functions. The added ingredients do not establish separate benefits across the wider skin and eye-related uses.
- Format
Tablet - Container
- 120 Tablet(s)
- Per serving
- $0.11
- Customer rating
- 4.9 · 13,098 ratings
Goals
Impact
Highest effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Impact
High effect
Vitamin C · 1000 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Ester-C Calcium Ascorbate) | 1000 mg | |
Calcium (Ester-C Calcium Ascorbate) | 110 mg | |
C-Sorb Citrus Bioflavonoid Complex | 102 mg |
Vitamin C (Ester-C Calcium Ascorbate) · 1000 mg OverallScore92
Each serving provides 1000 mg of vitamin C at a low cost per gram, making it a substantial contribution. It uses calcium ascorbate.
How this ingredient is rated
Active Ingredient Quality & Bioavailability90
Ester-C uses calcium ascorbate is a buffered mineral form.
Vitamin C Chemical Form & Delivery System
The vitamin C comes from Ester-C, a calcium ascorbate form.
Gastric Comfort & pH Balance
Calcium ascorbate is a buffered mineral form.
Dose, Safety & Label Transparency91
The serving supplies 1000 mg of vitamin C. The amount and source are stated.
Optimal Dosage Targeting
A serving provides 1000 mg of vitamin C, an amount within the 500–1,000 mg range.
Purity & Excipient Quality
The other-ingredients panel indicates standard excipients.
Mineral & Source Transparency
The vitamin C amount and calcium amount are stated.
Value100
The cost per gram of vitamin C is low.
Price per Gram of Vitamin C
The cost per gram of vitamin C is low.
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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.