Douglas Laboratories Bioflavonoid Complex

by Douglas Laboratories

Douglas Laboratories Bioflavonoid Complex is a dietary supplement providing citrus bioflavonoids derived from lemon. Each tablet supplies a combination of citrus bioflavonoids rich in quercetin and its glycoside, rutin. 

Bioflavonoid (also called flavonoid) is a class of phytonutrients that are potent antioxidants, which scavenge many potentially damaging free radicals. Free radicals are unstable chemicals formed in the body during metabolism and from exposure to environmental sources, such as pollution and cigarette smoke.

Free radicals are produced during energy metabolism and are necessary for immune function, but when an excessive number of free radicals are formed, they can attack healthy cells, especially their membrane lipids and proteins. This, in turn, is thought to contribute to a degradation of the structure and function of these cellular components. Another aspect of the antioxidant properties of bioflavonoid is their synergy with vitamin C. 

Bioflavonoids are also capable of binding to metal ions, which prevents these metals from acting as catalysts in the body to enhance free radical production. 

Many bioflavonoids, especially rutin and quercetin, support the health of the body' circulatory system by helping maintain capillary blood flow and proper vascular permeability, integrity, and resiliency. Bioflavonoids are also involved in a wide array of other biochemical functions, such as immune function, platelet aggregation, enzyme activity, and the healthy metabolism of collagen, cholesterol, and histamine.


Serving Size: 2 Tablets

Amount Per Serving ... %Daily Value

Bioflavonoid Complex ... 500 mg ... *
(containing lemon bioflavonoids, quercetin, and rutin)

*Daily Value (DV) not established

Other Ingredients:

Microcrystalline cellulose, hydroxypropyl cellulose, silica, vegetable stearate, croscarmellose sodium and coating (hypromellose, glycerin).

Suggested Use:

As a dietary supplement, adults take 2 tablets daily or as directed by your health professional.

Side Effects:

No adverse side effects have been reported.


Store in a cool, dry place, away from direct light. Keep out of reach of children.

*These statements have not been evaluated by the U.S. Food and Drug Administration. This product is not intended to treat, mitigate, diagnose or cure any disease.

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