Health Benefits of Quercetin Supplements
Quercetin is a powerful antihistamine that improves lung function. Quercetin supplements can help reduce the inflammation that results from hay fever, allergies, bronchitis, emphysema and asthma. Quercetin helps allergy symptoms by preventing the release of histamine into the bloodstream, which is the source of allergy symptoms such as runny nose, itchy eyes and wheezing.
Quercetin supplements have anti-inflammatory properties that may help to reduce pain from disorders such as arthritis, bursitis and gout. It also has powerful anti-viral properties that help diminish the effects of the herpes virus, the Epstein-Barr virus, and the polio virus.
Other significant benefits of quercetin may include:
Quercetin has been shown to be useful in treating the following conditions:
The richest sources are found in plants of the allium family, including onions, scallions, chives, leeks, shallots and garlic. Quercetin is also found in many fruits, including citrus fruits, apples, cherries, grapes, tomatoes and berries. Vegetable sources include spinach, celery, potatoes, lettuce, broccoli, parsley, kale, red cabbage and green beans. Other sources include olive oil, tea, red wine, capers and cocoa.
Quercetin is often combined with supplements of vitamin C, because it works synergistically with that vitamin. It's also sometimes combined with bromelain for enhanced absorption. Bromelain, derived from the pineapple plant, is a digestive enzyme that also possesses anti-inflammatory properties that synergize with those of quercetin.
Rutin and hesperidin, are very similar in composition to quercetin. Many experts have come to agree that rutin and quercetin in fact “work together” by complementing each other. For this reason, it is recommended that rutin and quercetin are taken together; accordingly, these flavonoids are often found together in a high-quality vitamin C supplements.
Quercetin is is also a key ingredient in many medicinal botanicals, including ginkgo biloba, St. John's wort and elder.
Studies indicate that the amounts of quercetin you need to help prevent things like heart disease and cancer are fairly substantial. To get enough, you'll probably need to take supplements, anywhere from 500 to 1,000mg a day.