Highest Quality Supplements Since 1980

Read (27) Reviews
Write a Review

Vitamin C with Dihydroquercetin

1000 mg, 250 vegetarian tablets
Item# 00927

Retail Price: $25.50

Your Price:

Your favorite Life Extension® products can be delivered to you automatically. Just look for the “AutoShip” button. Select AutoShip, and choose your preferred ship-out date. It's that easy!


  • Vitamin C with Dihydroquercetin
  • 1000 mg, 250 vegetarian tablets
  • Item Catalog Number: 00927

It would be impossible to overstate the importance of vitamin C in your diet. Since its isolation more than 80 years ago, thousands of research studies have shown that vitamin C is a powerful antioxidant that scavenges free radicals, provides protection from oxidative stress, and delivers profound whole-body health benefits.1-8 Vitamin C with Dihydroquercetin is a unique formulation that combines high-quality vitamin C with dihydroquercetin (a flavonoid antioxidant), which has been shown to boost vitamin C levels and aid your body in recycling vitamin C. When you’re ready to supercharge your daily vitamin C supplement, pick up a bottle of Vitamin C with Dihydroquercetin.

Benefits at a Glance

  • A powerful antioxidant and free radical scavenger
  • Protects the body from oxidative stress
  • Promotes healthy iron absorption
  • Essential to the formation of collagen
  • Protects against multiple environmental stresses
  • Lasts longer in the body than typical vitamin C formulations

Natural Ways to Boost Vitamin C

The benefits of vitamin C are well known to nutritional researchers. It has been shown to:

  • Promote the absorption of iron while simultaneously preventing its oxidation.9,10
  • Aid in the formation of collagen, the connective tissue that supports arterial walls, skin, bones, and teeth.4-6
  • Protect the body from the effects of stress.11-15
  • Play a vital protective role against physical and environmental stresses such as ingestion of heavy metals,16-21 cigarette smoking,22-25 compromised immunity,26-33 and extreme temperatures.34-37

Vitamin C is an essential nutrient, meaning humans can’t create it internally. Instead, we must get all of our vitamin C from diet or supplements. Unfortunately, vitamin C is also water soluble, meaning that it’s quickly oxidized and released inside the body. Until now, the best way to maintain optimal blood levels of vitamin C was to consume it multiple times throughout the day.

Vitamin C with Dihydroquercetin solves this problem through the addition of the flavonoid antioxidant known as dihydroquercetin. This unique molecule has been shown to “supercharge” vitamin C by slowing down its oxidation and elimination from the body. The result is more stable and longer-lasting blood levels of vitamin C, plus the antioxidant benefits of dihydroquercetin itself. This synergistic relationship greatly enhances the efficacy of both molecules in the body’s organs and tissues.

If you’re ready to supercharge your vitamin C program, add Vitamin C with Dihydroquercetin to your daily supplement regimen.


  1. Biochim Biophys Acta. 2012 Dec;1826(2):443-57.
  2. Redox Rep. 2010;15(1):11-9.
  3. Adv Nutr. 2011 Mar;2(2):78-88.
  4. Altern Med Rev. 2003 Nov;8(4):359-77.
  5. J Invest Dermatol. 2002 Apr;118(4):565-72.
  6. Radiat Environ Biophys. 2007 Mar;46(1):61-8.
  7. Free Radic Biol Med. 2007 Sep 1;43(5):853-9.
  8. PLoS Negl Trop Dis. 2012;6(7):e1729.
  9. Br J Nutr. 2003 Dec;90(6):1081-5.
  10. Am J Clin Nutr. 2006 Oct;84(4):830-4.
  11. In Vivo. 1994 Nov-Dec;8(6):1079-85.
  12. Ann Nutr Metab. 1990;34(2):85-92.
  13. Psychopharmacology (Berl). 2002 Jan;159(3):319-24.
  14. Am J Clin Nutr. 2007 Jul;86(1):145-9.
  15. Endocr Res. 2004 Nov;30(4):871-5.
  16. Genet Test Mol Biomarkers. 2012 Sep;16(9):1001-6.
  17. Environ Toxicol Pharmacol. 2011 Jan;31(1):137-42.
  18. Acta Biochim Biophys Sin (Shanghai). 2012 Apr;44(4):330-8.
  19. Nig Q J Hosp Med. 2012 Apr-Jun;22(2):85-90.
  20. Toxicology. 2005 Jul 1;211(1-2):26-35. 
  21. Chem Biol Interact. 2001 Jul 31;137(1):75-88.
  22. Toxicology. 2002 Nov 15;180(2):121-37.
  23. Environ Health Perspect. 2000 Feb;108(2):105-8.
  24. Am J Ther. 2007 Mar-Apr;14(2):189-93.
  25. Am J Clin Nutr. 2000 Feb;71(2):530-6.
  26. Adv Ther. 2002 May-Jun;19(3):151-9.
  27. Br J Dermatol. 1980 Jan;102(1):49-56.
  28. Respir Med. 2007 Aug;101(8):1770-8.
  29. Acta Obstet Gynecol Scand. 2007;86(7):783-7.
  30. J Int Med Res. 2012;40(1):28-42.
  31. J Am Coll Cardiol. 2003 Nov 5;42(9):1656-62.
  32. J Pediatr Gastroenterol Nutr. 2003 Jul;37(1):53-62.
  33. Cancer Sci. 2003 Apr;94(4):378-82.
  34. Indian J Med Res. 2002 Jul;116:29-34.
  35. Vopr Pitan. 1978 Jan-Feb;(1):44-8.
  36. J Am Coll Nutr. 1990 Apr;9(2):150-4.
  37. Jpn J Physiol. 1999 Apr;49(2):159-67.


Supplement Facts

Serving Size 1 vegetarian tablet

Amount Per Serving

Vitamin C (as ascorbic acid)

1000 mg

Dihydroquercetin-3-rhamnoside [from grape extract (leaf)]

10 mg

Other ingredients: microcrystalline cellulose, stearic acid, croscarmellose sodium, hydroxypropyl methylcellulose, vegetable stearate, coating (hydroxypropyl methylcellulose, glycerin), silica.


Dosage and Use
  • Take one (1) tablet daily with food, or as recommended by a healthcare practitioner.