🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 47% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 tsp Serving Size
31 Servings
Other Combinations Product Type
47% Evidence Coverage

Supplement Facts — Evidence Check

Calories
15 Calorie(s) (1% DV)
Vitamin C
4000 mg (6666% DV)
Calcium
110 mg (11% DV)
Iron
5 mg (28% DV)
100 mcg (66% DV)
✅ Within RDA (0.7× RDA of 0.15 mg) 📚 243 studies (Tier A: 4, B: 133)
RDA 0.15mg This product: 0.1mg UL 1.1mg
160 mg (40% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 160mg
8 mg (53% DV)
✅ Within RDA (0.7× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 8mg UL 40mg
60 mcg (86% DV)
✅ 1.1× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.06mg UL 0.4mg
1 mg (50% DV)
✅ 1.1× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)
RDA 0.9mg This product: 1mg UL 10mg
5 mg (250% DV)
✅ 2.2× RDA — within safe limits 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 5mg UL 11mg
200 mcg (167% DV)
📊 5.7× RDA — above typical dose 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.2mg
150 mcg (200% DV)
📊 3.3× RDA — above typical dose (UL: 2 mg) 📚 2 studies — no high-quality reviews
RDA 0.045mg This product: 0.15mg UL 2mg
Potassium
95 mg (3% DV)
500 mcg
📊 Market median: 3.0mg (58 products) 📚 2 studies — no high-quality reviews
This product: 0.5mg UL 20mg
150 mcg
📊 Market median: 0.5mg (6 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 0.15mg UL 1.8mg

Other Ingredients

Citric Acid Aspartic Acid Silica

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Recommendation: One teaspoon per day following a meal. May be mixed with juice or water or as directed by your health care professional.

⚠️ Warnings & Precautions

Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of the reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

If tamper resistant seals are broken do not use this product.

🧪 Formulation Notes

Buffer-C contains a high potency source of buffered Vitamin C. It can be given in elevated doses without the side effects of stomach cramps or diarrhea that often accompany high doses of unbuffered Vitamin C. Buffer-C also contains many trace minerals to supplement the body, replacing the minerals that may be leached out during high dose vitamin therapy.

Additional Information

Bringing balance back to life

Product Details

UPC / SKU 3 58301 31613
DSLD Entry Date 2020-08-23
Product Type Other Combinations
Form Liquid
DSLD ID 231548
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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