Patients allergic to pollen or grass are required to take weekly injections for many years. Doses containing the allergen are given to strengthen the immunity of the patients to those allergens.
Dr. Sandra Lin at Johns Hopkins University analyzed 63 previous studies, which evaluated the efficacy of sublingual drops in treating allergies. Allergy drops are widely used in Europe and as an off-label drug in USA. FDA has not yet approved the drops therapy in US.
Based on the review it was found that the drops reduced the allergy symptoms by more than 40% when compared with other treatment options like injections.
The author opines that this is an attractive option for many especially kids who are reluctant to take shots.
The report is published online Wednesday in the Journal of the American Medical Association.