Butterbur, stinging nettle, Tinospora cordifolia, European elderflower, sorrel, cowslip and verbena as well as gentian root, echinacea, baical skullcap and goldenseal are herbs used to treat allergies, according to WebMD; they work by blocking histamines or otherwise alleviating allergy symptoms. Dong quai, eyebright, milk thistle, red clover and yarrow are also herbs that, when made into teas, are used to treat allergies, according to naturopath Dr. Lisa Lewis.
In addition, quercetin, an extract of certain fruits and vegetables; the grass Phleum pratense; bromelain, an extract of pineapples; grape seed extract; pine bark extract called pycnogenal; vitamin C; honey; the vine cat's claw; bark of the Albizzia lebbeck tree; and the agae spirulina may ease the symptoms of allergies, notes WebMD. In addition to quercetin, other bioflavinoids, such as catechin and hesperidin; vitamins A and E; zinc; and gingko may ease allergic reactions, according to Dr. Lewis.
DoctorOz.com recommends magnolia extract to treat allergy symptoms. Eating foods high in omega-3 fatty acids, such as cold-water fish, walnuts, flaxseed oil, grass-fed meat and eggs, lowers the risk of suffering from allergy symptoms, according to Mother Earth News. Eating plenty of leafy, dark green, deep yellow and orange vegetables, bamboo shoots, cabbage, beets, beet tops, carrots, yams, onions, garlic, ginger, cayenne and horseradish may also reduce allergy symptoms, notes Dr. Lewis.