What is Sublingual Immunotherapy (SLIT)?
Sublingual Immunotherapy (SLIT), also known as Allergy Drops, is a form of immunotherapy that serves as an alternative to allergy shots and involves the placement of allergen extracts under the tongue. SLIT has been used for many years in Europe as an effective alternative to allergy shots and is currently undergoing approval by the Food and Drug Administration (FDA). The extracts that are used in preparing SLIT are the same extracts that are used in traditional allergy shots. These extracts are approved and closely monitored by the FDA. The difference is in the method of delivery. With SLIT, the extracts are placed under the tongue rather than administered with a shot.