Do antihistamines help with food allergies?

Sometimes.: They can be helpful in mild cases of immediate hypersensitivity. For more severe cases, steroids or Epinephrine may be needed.

Yes: They can help alot depending upon what you are allergic to. Some food allergies, such as peanut, even oral antihistamines are not strong enough to prevent anaphylaxis and avoidance is the only "treatment" in wide spread use. Milder allergies can be improved with antihistamines. Check with your allergist.