C 500 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Tablet(s) · 1 per day

Not Present

• 

  21st Century C 500 Mg Tablets

  21st-century-vitamins4.8(4400)

  $4.99
• 

  21st Century Prolonged Release C Tablets

  21st-century-vitamins4.8(964)

  $7.99
• 

  21st Century Natural C-500 Rose Hips 500 mg Tablets

  iHerb4.8(1600)

  $6.99
• 

  21st Century Chewable Tablets

  21st-century-vitamins4.8(1700)

  $7.99
• 

  21st Century Tablets

  Walmart - iHerb4.8(4500)

  $10.34
• 

  Pack of 12-21st Century C 500 mg Tablets 110 EA

  AmericanPharmaWholesale.com4.8(4800)

  $43.70
• 

  Case of 24-21st Century C 500 mg Tablets 110 EA

  AmericanPharmaWholesale.com4.8(4400)

  $79.99
• 

  21st Century C-500 - 250 Tablets

  GoSupps.com4.8(4800)

  $34.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• Supplement Superstore

  5.0 (660)

  Vitamin & supplements store

  8184 N Lindbergh Blvd, Florissant, MO 63031

  Directions(314) 839-7782

• GNC

  4.3 (36)

  Vitamin & supplements store

  11274 W Florissant Ave #1274, Florissant, MO 63033

  Directions(314) 838-3634

• Day Light Nutrition

  4.7 (71)

  Vitamin & supplements store

  8565 Airport Rd, Berkeley, MO 63134

  Directions(314) 522-8804

• The Vitamin Shoppe

  4.6 (175)

  Vitamin & supplements store

  1490 S Hanley Rd, St. Louis, MO 63144

  Directions(314) 647-2548

• Blue Sky Nutrition

  3.6 (84)

  Health food store

  8 Grandview Plaza Shopping Center, Florissant, MO 63033

  Directions(314) 837-7290

• Supplement Superstore

  5.0 (1389)

  Vitamin & supplements store

  8420 Eager Rd, St. Louis, MO 63144

  Directions(314) 961-3935

• The Vitamin Shoppe

  4.5 (167)

  Vitamin & supplements store

  7025 S Lindbergh Blvd, St. Louis, MO 63125

  Directions(314) 845-1671

• GNC

  3.7 (34)

  Vitamin & supplements store

  206 N Hwy 67, Florissant, MO 63031

  Directions(314) 839-4243

• Ascorbic acid in the 21st century–more than a simple antioxidant

  HR Griffiths, J Lunec - Environmental toxicology and pharmacology, 2001 - Elsevier

  … oxidised base lesion 8-oxoadenine (8-oxoA) during supplementation with 500 mg/day vitamin C in normal healthy subjects. Earlier this year, further infamy resulted from the preliminary …

  2001183 citations

• Nutritional supplements in pregnancy: commercial push or evidence based?

  M Glenville - Current Opinion in Obstetrics and Gynecology, 2006 - journals.lww.com

  … that supplementation can play a valuable role in the health of … the limitations of the 21st century lifestyle and the nutritional … A combination of vitamin C (500 mg/day) and vitamin E (400 IU…

  200670 citations

• Global hotspots and trends of nutritional supplements for sick populations from 2000 to 2024

  C Shi, H Liu, T Fu, Y Li, H Zhao, F Liu - Frontiers in Nutrition, 2025 - frontiersin.org

  … (500 mg/d vitamin C, 400 IU/d vitamin E, and 15 mg/d β-carotene) along with zinc (80 mg zinc … become a popular dietary supplement that improves a variety of health-specific outcome …

  20252 citations

• … safety of multivitamin and mineral supplement use to prevent cancer and chronic disease in adults: a systematic review for a National Institutes of Health state-of-the …

  HY Huang, B Caballero, S Chang… - Annals of internal …, 2006 - acpjournals.org

  … of multivitamin and mineral supplements. For public health policymakers, our conclusion is … from routine use of multivitamin and mineral supplements by adults in the United States for …

  2006343 citations

• The Health Delusion: How to Achieve Exceptional Health in the 21st Century

  G Matten, A Goggins - 2012 - books.google.com

  … magazines, wonder foods and supplements, surely we should be brimming with health? When it comes to conquering disease who needs more information than that to stay in tiptop …

  20126 citations

• Herbal medicine of the 21st century: a focus on the chemistry, pharmacokinetics and toxicity of five widely advocated phytotherapies

  S Suroowan, MF Mahomoodally - Current Topics in Medicinal …, 2019 - ingentaconnect.com

  … Consequently, this review is an attempt to highlight the health benefits, pharmacokinetics, … not dosedependent; 500 mg/individual (2.3 L/kg-0.42 to 0.45 L/h/kg), 1000 mg/individual (3.1 L/…

  201938 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-08-23. DSLD Label ID: 205880. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.