A runny nose and itchy eyes – for millions, those are the signs of ragweed, the number one cause of allergies in the fall. Ragweed causes misery to an estimated 36 million people in the U.S. each fall. For relief, ragweed allergy sufferers often try over-the-counter medicines or even turn to time-consuming allergy shots. But now, in a cutting edge study at Vanderbilt Medical Center in Nashville, Tennessee, doctors are using new allergy ‘drops’ in the mouth. Barb Cramer has the story in this Vanderbilt Video News release.