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Life Extension Vitamin C with Dihydroquercetin, 1000mg, 250 tabs


Vitamin C, or ascorbic acid, is a white, crystalline, water-soluble substance found in citrus fruits and green vegetables. As an antioxidant, vitamin C scavenges free radicals in the body and protects tissues from oxidative stress.

Vitamin C also promotes the absorption of iron, while preventing its oxidation. Vitamin C is a vital co-factor to the formation of collagen, the connective tissue that supports arterial walls, skin, bones, and teeth.

More vitamin C is contained in the adrenal glands than any other organ in the body and is required at higher levels during times of stress.

Physical stresses on the body such as ingestion of heavy metals, cigarette smoking, immune impairment, extreme temperatures, and chronic use of certain medications such as aspirin also signal the need for increased intake of vitamin C.

Because humans do not manufacture vitamin C internally, it must be obtained through dietary sources or supplements.

Few people realize, however, that vitamin C is a water-soluble nutrient that is quickly oxidized and excreted by the body, which limits its efficacy. Until now, those seeking to capture vitamin C’s optimal health benefits have had no choice but to consume it several times throughout the day.

Fortunately, a flavonoid antioxidant known as dihydroquercetin functions as a vitamin C “supercharger.” Studies demonstrate that dihydroquercetin acts to inhibit the oxidation of vitamin C, thereby helping to maintain its concentration and to recycle vitamin C throughout the body.

This synergistic relationship between dihydroquercetin and vitamin C greatly enhances the efficacy of both molecules in the body’s organs and tissues. Vitamin C with Dihydroquercetin was formulated for those seeking to obtain optimal efficacy and antioxidant protection from their vitamin C supplement.

Life Extension's mission is simply to help you live a healthier, longer life. They are at the forefront of medical research, constantly looking for ways to prolong youth, health, and life. They have been at it for more than 34 years, investing more than $140 million to find therapies and technologies that could lead to lifesaving cures for the diseases of aging.

Life Extension insists on purchasing only the highest quality raw materials from all over the world, primarily from leading US, Japanese and European sources. They go one step further by using advanced analytical methods, such as high-performance liquid chromatography and gas chromatography/mass spectrometry, to ensure Their products meet label claims for potency and purity. Life Extension tests its raw materials using US Pharmacopeia and other exacting pharmaceutical assay standard.

Supplement Facts:

Serving Size: 1 tablet

Servings Per Container: 250

Amount Per Serving:

Vitamin C (as ascorbic acid)

1000 mg

Dihydroquercetin-3-rhamnoside [from Grape (Vitis vinifera) Extract (leaf)]

10 mg

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

Contains corn.
This product contains NO milk, egg, fish, peanuts, crustacean shellfish (lobster, crab, shrimp), soybeans, tree nuts, wheat, yeast, gluten, or rice. Contains NO sugar, and no artificial sweeteners, flavors, colors, or preservatives.

Dosage and Use:

Take one tablet daily with food, or as recommended by a healthcare practitioner.


Ascorbic acid is the acidic form of vitamin C, and even in tablet form, can cause gastric upset or diarrhea for some people. This can often be alleviated by consuming it with meals. Start with a low dose then gradually increase.

If you have a stomach ulcer, use an antacid, buffering agent, or a buffered form of vitamin C. Calcium carbonate and magnesium oxide are effective antacids. Unbuffered ascorbic acid in the mouth may be harmful to tooth enamel.




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