A histamine-free diet restricts the consumption of foods and beverages containing histamine, reports Foods Matter. Products rich in histamine include alcoholic beverages, anchovies, eggplant, mushrooms and yogurt, notes Allergy & Immunology Associates of Michigan. Foods that cause histamine to release are milk, shellfish, strawberries and tomatoes.
A histamine-free diet may not be enough to provide relief if the body’s level of histamine is still higher than the enzymes ability to break down the histamine. When diet restrictions are not enough, antihistamines can usually help. High histamine levels cause blood vessels to dilate and mucus production to intensify. Other symptoms are itchy eyes, sneezing, wheezing and stomach cramps, states Allergy & Immunology Associates of Michigan.