Incorporating quercetin-rich foods in the diet will also help to prevent the release of histamines by stabilizing over-reactive mast cells. A natural bioflavonoid derived from plants, quercetin is an antioxidant, which helps to prevent cell damage in the body.

Rich natural sources include lettuce, broccoli, tomatoes, parsley, onions, apples and citrus fruits, as well as tea. In severe cases quercetin can be taken in supplemental form at a recommended dosage of 1,000 milligrams daily, but should not be used by anyone suffering from a liver disorder. Both grape seed extract and vitamin C will enhance the effectiveness of quercetin in the diet.

Spicy foods are recommended to keep the airways clear and as temporary decongestants. This group includes chili peppers, cayenne pepper, horseradish, hot ginger, hot mustard, fenugreek, onion and garlic. Also get plenty of omega-3 fatty acids from cold water fish, flaxseed oil, and walnuts.

If you have a particular sensitivity to ragweed, at the height of the season avoid foods that naturally contain echinacea such as bananas, cucumbers, melons, and chamomile tea. Finally, eliminate any foods from the diet that cause even mild allergic reactions as they will make the overall system more likely to go into allergic overload when severe triggers like pollens are introduced.

Natural Antihistamines