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C-1000 Caps

product on market Capsule Twinlab Safety: 100/100
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

Label for C-1000 Caps
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
Vitamin
Product Type
0%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
1000 mg (1111% DV)

Other Ingredients

Gelatin Microcrystalline Cellulose Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Take one capsule one ore more times daily.

Warnings & Precautions

Warning: If you are pregnant or nursing, taking any medication, or have any medical condition, consult a health care professional before use.

Keep out of reach of children.

Formulation Notes

Bottled and packaged in the USA

Twinlab C-1000 Caps are easy to swallow.

One hard gelatin capsule contains 1000 mg of pure crystalline vitamin C.

No artificial colors, flavors, or preservatives added.

Supports: Collagen production Immune system Heart health

Additional Information

New look, same great formula

Keep tightly closed in a cool, dry place.

Instagram @Twinlab Facebook TwinlabVitamins

Best if used by date shown on bottle.

Metadata

Product Details

UPC / SKU0 27434 00713 9
DSLD Entry Date2022-06-16
Product TypeVitamin
FormCapsule
BrandTwinlab
DSLD ID268464
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.