🟢 92/100

This product looks safe

  • Zinc: 80mg is 2.0× the Tolerable Upper Intake Level (40mg)
  • 60% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Zinc: 80mg is 2.0× the Tolerable Upper Intake Level (40mg)

Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
60% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
500 mg (555% DV)
40 mg (266% DV)
✅ 2.7× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 40mg UL 1000mg
80 mg (727% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 2.0× (UL: 40 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 80mg UL 40mg
12 mg
📊 Market median: 10.0mg (105 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 12mg
4 mg
📊 Market median: 4.0mg (32 products)
This product: 4mg

Other Ingredients

Rice Flour Cellulose Magnesium Stearate Silicon Dioxide

Label Claims — Verification

Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

🧪 Formulation Notes

Foundation Series Visual deterioration prevention formula Improve overall eye health Decrease blue light damage Prevent visual deterioration

Additional Information

Nothing compares

Product Details

DSLD Entry Date 2021-03-25
Product Type Other Combinations
Form Capsule
Brand 1st Phorm
DSLD ID 242753
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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