Avoidance is the only way to prevent symptoms from a food allergy. Be careful to read food labels to avoid your allergen and educate yourself on the names of the ingredients that may indicate your allergen is present. There are many substitutions that you can use for the foods you need to avoid.

Wear a Medical Alert bracelet to alert others to be aware of your allergy in case there is an emergency.

Be sure to tell family, friends, co-workers, teachers etc. of your allergy if there should be an emergency.  

Carry an EpiPen or Twinject, which is injectable adrenaline, also known as injectable epinephrine, if you have a severe allergy in the event that anaphylaxis occurs. This requires a prescription from your doctor.  Your doctor may also prescribe other antihistamines.  Benadryl can be used if you do not have an injectable adrenaline on hand, however it is not as effective.