Allergen immunotherapies are used to treat allergic rhinitis and allergic conjunctivitis caused by pollen and dust. They also have other uses, such as lowering the severity of allergic reactions in people with peanut allergies. These therapies work by gradually exposing you to small amounts of the allergen, helping your immune system become less sensitive to it over time. Allergen-immunotherapies come in different forms, including oral powders and sublingual (under the tongue) tablets. Examples include Odactra (house dust mite allergen extract), Grastek (timothy grass pollen allergen extract), Ragwitek (short ragweed pollen allergen extract), and Oralair (a mix of five grass pollens allergen extract). For peanut allergies, you might use Palforzia (peanut allergen powder).
