Quercetin is a flavonoid that is found in a wide variety of vegetables and herbs such as tea, broccoli, red apples and onions. Preliminary research suggests that Quercetin inhibits the production of histamines in the body. Studies show that the efficacy of Quercetin is boosted when combined with Vitamin C, which also modulates histamine levels. N-acetyl Cysteine (NAC) is a natural amino acid derivative, which has the ability to break down mucous. It increases the levels of the antioxidant, glutathione to help normal cell function and liver function. Quercetin, Vitamin C and NAC all possess antioxidant activity. Many researchers are beginning to make a correlation between allergies, inflammation and antioxidant status. Nettle is a well-known traditional remedy. In a recent double-blind study using freeze-dried Nettle leaf, researchers found that the herb relieved allergy symptoms in over half of the participating patients.

As an herbal supplement, take two capsules twice daily with food
Do not use if pregnant or nursing. Keep out of reach of children. Discontinue use if unusual symptoms occur. Do not take products with Quercetin if you are taking prescribed immune-suppressive drugs or Felodipine. Seek the advice of a health care professional if you are taking hormonal estrogen products.
Warning: On extremely rare occasions, use of Nettle has been known to cause allergic reactions in individuals prone to allergies. We recommend starting with one capsule if you have never taken nettle before.