Sublingual immunotherapy (SLIT) is an injection free natural treatment that addresses the underlying cause of environmental allergies.  The therapy involves exposing a patient to small doses of the allergen(s) under the tongue, which helps to re-train the immune system to become less reactive.  This process is called desensitization, and can be used to treat hay fever, allergic rhinitis, allergic conjunctivitis, and allergic asthma in adults, and children over 3 years of age (...)