🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 71% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

2 Capsule(s) Serving Size
60 Servings
Other Combinations Product Type
71% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
100 mg (167% DV)
4.8 mg (240% DV)
✅ 2.1× RDA — within safe limits 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 4.8mg UL 11mg
📊 Market median: 600.0mg (79 products) 📚 24 studies (Tier A: 0, B: 6)
This product: 430mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 430mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 430mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 430mg
📊 Market median: 1000.0mg (1115 products) 📚 22 studies (Tier A: 0, B: 9)
This product: 100mg

Other Ingredients

Gelatin Magnesium Stearate

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) Kosher Gluten Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take 2 capsules twice daily, morning and evening.

⚠️ Warnings & Precautions

Tamper evident: do not use this product if imprinted foil seal under cap is broken or missing.

Keep out of reach of children.

Caution: if you are pregnant or nursing consult your physician before taking this product.

Contains crustacean shellfish (crab & shrimp) ingredients.

🧪 Formulation Notes

Mfg. in a KO Kosher certified, FDA registered facility using Good Manufacturing Practices (GMPs).

Mfg. in a KO Kosher certified, FDA registered facility using Good Manufacturing Practices (GMPs).

Conforms to USP <2091> for weight.

Meets USP <2040> disintegration. USP <2091 and <2040>guarantee maximum bioavailability.

Made in USA

4 Vital Glucosamines Plus Chondroitin, C & Manganese

Helps promote cartilage regeneration and healthy joints

Gluten free

Additional Information

Keep tightly closed. Store at room temperature: 59 degrees-86 degrees Fahrenheit (15 degrees to 30 degrees Celsius).

Product Details

UPC / SKU 3 64175 73512 0
DSLD Entry Date 2023-09-25
Product Type Other Combinations
Form Capsule
Brand Foster Regal
DSLD ID 297001
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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