Food allergies have become very common nowadays disregarding to both adults and kids. In early stages, some kind of food allergies can be cured but we can't guarantee that it will not come back later after months, years or so. For example, some kind of allergies from intake of peanuts, certain kind of green vegetables etc are causing due to the action of certain histamines. This kind of allergy can be cured or suppressed by using anti-histamines. Most popular antihistamines are Levocitricin hydrochlorides and montelukast sodium. By using these kinds of medicines may cure these allergies at early stages but it seems difficult to cure once the symptoms have become chronic. So the best way to escape from food allergies is to avoid those foods making you uncomfortable.