How can i best take care of food allergy?

Epinephrine: Food allergies cause life threatening reactions. These reactions can only be effectively treated with Epinephrine (adrenaline). Antihistamines can treat skin symptoms, but if breathing difficulty or low blood pressure happen (which is impossible to predict), they will not help. Anyone with a food allergy should always have Epinephrine available.

Avoid the food: The allergic reactions to foods can vary from vague abdominal pain & discomfort, to hives, to life threatening anaphylaxis. Luckily anaphylaxis is rare and usually limited to a narrow range of foods or a single item. These can be revealed on blood tests. Management ranges from simple food avoidance to carrying an Epi pen based on the individuals needs.