A possible alternative to allergy shots.
Researchers at Johns Hopkins believe there is an alternative to allergy shots. They found using liquid drops of various allergens under the tongue is safe and effective. Doctors give patients tiny amounts of purified ragweed, grass, dust mites, pollen or mold. Over time the patient builds up an immunity. The drops are popular in Europe because they can be taken at home, but they are not approved here in the U.S.
Source: CBS News