Allergy medicines that go under the tongue are just as effective as anti-allergy shots, a new study finds. Researchers analyzed 63 trials with more than five-thousand people, aged four to 74. Scientists found strong evidence that the treatment reduced reactions to substances including grass, tree pollen, dust mites and ragweed. Allergy medications taken under the tongue are common in Europe, but the Food and Drug Administration hasn't approved the therapy for the U.S. The study is published in the "Journal of the American Medical Association."