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C-500 Plus

product on market Capsule Altrum Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin C and citrus bioflavonoids are supported by strong evidence for antioxidant support and immune function. Calcium is well-documented for maintaining bone density and nerve signaling. Overall, the evidence coverage for this specific combination is limited.

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

Label

Product Label

Label for C-500 Plus
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Veg Capsule(s)
Serving Size
Other Combinations
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
500 mg (556% DV)
Calcium
55 mg (4% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Hypromellose Microcrystalline Cellulose Stearic Acid
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: Take 1 capsule 1 to 3 times daily.

Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Produced in a GMP facility that processes other ingredients containing these allergens.

Formulation Notes

Vitamin C is a water soluble nutrient well known for its vital role in the immune system. Vitamin C is also necessary for the production of collagen (a structural protein in connective tissue) and is therefore important for skin, bone, and joint health. Vitamin C is needed for amino acid metabolism, neurotransmitter synthesis, and the utilization of many nutrients, such as folic acid and iron. It is also a highly effective antioxidant that can help maintain healthy tissues by neutralizing free radicals generated during normal metabolism and exposure to environmental stressors. This product supplies calcium ascorbate, a buffered form of vitamin c that is bioavailable and non-acidic; it is enhanced with bioflavonoids, which work synergistically with vitamin C.

Natural color variation may occur in this product.

Antioxidant protection Non-acidic, buffered

Non-GMO

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Includes Bioflavonoids

Additional Information

Store in a cool, dry place after opening.

GMP

Metadata

Product Details

DSLD Entry Date2020-08-23
Product TypeOther Combinations
FormCapsule
BrandAltrum
DSLD ID232941
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.