Vitamin C Crystals
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- Limited research evidence available for ingredients
B
Label Compliance Grade
Label
Product Label
Details
Label Data
1 tsp
Serving Size
57
Servings
Vitamin
Product Type
0%
Evidence Coverage
Ingredients
Supplement Facts — Evidence Check
Vitamin C
4000 mg
(4444% DV)
Claims
Label Claims — Verification
Unverified
All Other
Unverified
Structure/Function
Info
Product Information
Directions for Use
Suggested Usage: As a dietary supplement, adults take 1 teaspoon daily or as directed by your health professional. Mix with water or juice.
Warnings & Precautions
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
Keep out of the reach of children.
Use only if safety seal is intact.
Formulation Notes
Gluten-free, Non-GMO
Additional Information
Store in a cool, dry place.
Scan to learn about our manufacturing excellence Packaged by weight, not volume. Settling may occur.
Metadata
Product Details
UPC / SKU3 10539 82145 9
DSLD Entry Date2020-08-23
Product TypeVitamin
FormPowder
BrandDouglas Laboratories
DSLD ID232192
Data Updated2026-04-11
Research
Research Evidence
371
Research Sources
54
Avg Quality
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
A
Vitamin C supplementation for the primary prevention of cardiovascular disease
A
Vitamin C for preventing and treating the common cold
A
Vitamin C for preventing and treating pneumonia
A
Vitamin E supplementation in pregnancy
A
Vitamin C supplementation for prevention and treatment of pneumonia
A
Vitamin C supplementation for prevention and treatment of pneumonia
A
Nutritional interventions for preventing and treating pressure ulcers
A
Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.