Sublingual Immunotherapy (SLIT) Allergy Tablets Share this page: Last updated March 2020 Sublingual immunotherapy (SLIT) allergy tablets: allergy tablets is another form of allergy immunotherapy and involves administering the allergens under the tongue generally on a daily basis. Generic Name Brand Name Use Usual Dosage Dust mite oral extract Odactra Odactra Website Dust Mite Allergy 18-65 years old Once per day year round Timothy grass pollen sublingual extract Grastek Grastek Website Treatment of allergy to timothy and similar grasses. One tablet once a day. First dose in doctor's office starting 12 weeks prior to grass season. Grass pollen sublingual extract (sweet vernal, orchard, perennial, rye, timothy, Kentucky blue) Oralair Oralair Website Allergic rhinitis with or without allergic conjunctivitis. Ages 10-65 years old. One tablet once a day. First dose in doctor's office starting at least 4 months prior to the start of grass pollen season. Short ragweed pollen sublingual extract Ragwitek Ragwitek Website Treatment of allergy to ragweed. One tablet once a day. First dose in doctor's office starting 12 weeks prior to ragweed season. Find out more about hay fever. Share this page: