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Allergy medications: Know your options

Allergen and biological immunotherapy

Immunotherapy is meant to train the body's immune system not to react to certain allergens. This treatment might protect broadly against allergens that are hard to avoid such as pollens, dust mites and molds. Biologic medicines make changes to the body's immune system to treat allergic conditions such as asthma, sinusitis, hives and food allergy.

Immunotherapy is carefully timed and monitored while exposure to allergens is slowly increased. Immunotherapy might be useful in several cases, especially when other treatments aren't effective or tolerated.