$39.99 $0.44 per serving
Product analysis
Stellar C combines vitamin C with plant compounds for someone seeking that combination. Its high cost relative to vitamin C content limits its appeal when vitamin C alone is the aim.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality33
The available information does not establish an added quality advantage for the plant compounds. Rutin and quercetin preparation details are also incomplete, making direct comparisons harder.
Ingredient Transparency68
The listed amounts and most forms are disclosed. The split between vitamin C sources and some preparation details remain unclear.
Value For Money32
The vitamin C content is relatively expensive, while rutin offers more moderate value. Value for the other plant components is uncertain, so they do not establish a reason for the premium.
Customer Satisfaction73
Customer feedback is very positive. The relatively small review base limits certainty about how broadly that experience applies.
Product Focus68
Vitamin C remains at the center of the formula, with related plant compounds alongside it. The range of intended uses does not create a major concern about focus.
- Format
Capsule - Container
- 90 Capsule(s)
- Per serving
- $0.44
- Customer rating
- 4.8 · 98 ratings
Goals
Impact
Moderate effect
Vitamin C · 600 mg
Impact
High effect
Vitamin C · 600 mg
Impact
High effect
Vitamin C · 600 mg
Impact
High effect
Vitamin C · 600 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin C (Acerola, Ascorbic Acid) | 600 mg | |
Acerola (Vitamin C) | 200 mg | |
Citrus Bioflavonoids (Hesperidin) | 100 mg | |
Rutin | 50 mg | |
Quercetin | 50 mg |
Vitamin C (Acerola, Ascorbic Acid) · 600 mg OverallScore49
A serving provides 600 mg of vitamin C. The whole-product price makes the cost per gram of vitamin C high. It includes ascorbic acid, but another source and the proportions are unknown.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
It includes ascorbic acid, but another source and the proportions are unknown. Ascorbic acid is unbuffered; the unknown source leaves the blend’s buffering unclear.
Vitamin C Chemical Form & Delivery System
It includes ascorbic acid, but another source and the proportions are unknown.
Gastric Comfort & pH Balance
Ascorbic acid is unbuffered; the unknown source leaves the blend’s buffering unclear.
Dose, Safety & Label Transparency83
A serving provides 600 mg of vitamin C. The available other-ingredient panel has no flagged additives.
Optimal Dosage Targeting
A serving provides 600 mg of vitamin C.
Purity & Excipient Quality
The available other-ingredient panel has no flagged additives.
Mineral & Source Transparency
The vitamin C amount is stated, but one source remains unknown.
Value20
The cost per gram of vitamin C is high; it reflects the price of the whole product.
Price per Gram of Vitamin C
The cost per gram of vitamin C is high; it reflects the price of the whole product.
Acerola (Vitamin C) · 200 mg OverallScore100
A serving provides 200 mg of Malpighia glabra; there is no conclusion about its value per serving. The acerola preparation states 25% vitamin C.
How this ingredient is rated
Composition and Label Disclosure100
The acerola preparation states 25% vitamin C.
Marker and Preparation Disclosure
The acerola preparation states 25% vitamin C.
Composition and Label Disclosure100
The Malpighia glabra is identified by species and fruit, with 200 mg per serving.
Acerola Botanical Identity Disclosure
The Malpighia glabra is identified by species and fruit, with 200 mg per serving.
Commercial Price and Usability
There is no conclusion about value per serving.
Rutin · 50 mg OverallScore83
The selected serving declares 50 mg of rutin. The estimated whole-product cost per 100 mg of declared rutin preparation is moderate. The specific form is not available.
How this ingredient is rated
Composition and Label Disclosure
No separate composition detail was assessed here.
Composition and Label Disclosure100
The selected serving declares 50 mg of rutin.
Declared Active Rutin Amount
The selected serving declares 50 mg of rutin.
Commercial Price and Usability50
The estimated whole-product cost per 100 mg of declared rutin preparation is moderate.
Whole-Product Cost per 100 mg Declared Rutin Preparation
The estimated whole-product cost per 100 mg of declared rutin preparation is moderate.
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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.
- A randomized, double-masked study on the treatment of retinal vein occlusion with troxerutin
- 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.
- The effects of rutin flavonoid supplement on glycemic status, lipid profile, atherogenic index of plasma, brain-derived neurotrophic factor (BDNF), some serum inflammatory, and oxidative stress factors in patients with type 2 diabetes mellitus: A double-blind, placebo-controlled trial.
- Rutin ameliorates inflammation and improves metabolic function: A comprehensive analysis of scientific literature.
- Rutin-loaded chitosan microspheres: Characterization and evaluation of the anti-inflammatory activity.
- Oral enzyme combination therapy reduces systemic inflammation, urinary CTXII and pain in knee osteoarthritis: a proof-of-mechanism, randomised, crossover, double-blind, placebo-controlled trial.