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Vitamin C

product on market Powder Isotonix Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 20% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C and beta-carotene are supported by strong evidence for antioxidant functions and immune system support. Potassium plays a key role in maintaining cellular fluid balance and nerve signaling. However, overall evidence coverage for this specific formulation is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Vitamin C
Open Full PDF View on NIH DSLD →
Details

Label Data

3.33 Gram(s)
Serving Size
90
Servings
Other Combinations
Product Type
20%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calories
8 Calorie(s)
Total Carbohydrates
2 Gram(s) (1% DV)
800 IU (16% DV)
Within RDA (0.3× RDA) 241 studies (A:5, B:97)
Vitamin C
500 mg (833% DV)
Potassium
101 mg (3% DV)

Other Ingredients

Fructose Glucose Maltodextrin Malic Acid natural Orange flavor Silica Citric Acid
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions for use: Pour 1 level, white bottle capful of powder into the overcap. Add water to the line on the overcap (60 ml/2 fl. oz.) and stir. As a dietary supplement, take once daily or as directed by your physician. Maximum absorption occurs when taken on an empty stomach. This product is isotonic only if the specified amounts of powder and water are used.

Warnings & Precautions

Keep out of the reach of children.

Do not use if safety seal is broken or missing.

Formulation Notes

This is a vegetarian product and contains no wheat, soy, yeast, gluten, artificial flavor, starch, salt, preservatives or milk.

This is a vegetarian product and contains no wheat, soy, yeast, gluten, artificial flavor, starch, salt, preservatives or milk.

Additional Information

Provides antioxidant protection Supports a health immune system Promotes skeletal, muscle, cardiovascular and skin health Helps maintain healthy cholesterol levels Promotes normal regulation of heart functions The world's most advanced nutraceuticals

Store in a cool, dry place.

Made in the USA

REV 108

Metadata

Product Details

DSLD Entry Date2019-05-28
Product TypeOther Combinations
FormPowder
DSLD ID202714
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
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
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
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
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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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.