Buffered C Powder

product on market Powder Thorne 🟢 Safety: 100/100
Brand: Thorne
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 25% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

5.7 Gram(s) Serving Size
42 Servings
Other Combinations Product Type
25% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
2.35 Gram(s) (2611% DV)
Calcium
350 mg (27% DV)
350 mg (83% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 350mg
Potassium
99 mg (2% DV)

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested use: Mix 1 scoop with at least 8 ounces of water daily or as recommended by your health-care practitioner.

⚠️ Warnings & Precautions

Tamper evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

🧪 Formulation Notes

Foundational Immune support

Gluten free

Additional Information

Store tightly sealed in a cool, dry place.

Manufactured in the USA using US & imported ingredients NSF Contents Certified

Daily Value (DV)

Product Details

UPC / SKU 6 93749 15502 7
DSLD Entry Date 2025-09-25
Product Type Other Combinations
Form Powder
Brand Thorne
DSLD ID 337854
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
PubMed DOI Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
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
PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
PubMed DOI
View all evidence for Vitamin C →

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