February 1, 2011/Prepared FoodsMagazine -- Biothera's Wellmune WGPÆ, a natural food and supplement ingredient that activates the body's immune defenses, significantly reduced the duration of upper respiratory tract infection (URTI) symptoms in a healthy population of medical students during the peak of the cold-flu season, claims the company. During a 90-day study involving 100 fourth-year medical students of the Southampton University Medical School, there were 24 medically confirmed URTI cases equally divided between the study groups. Participants taking Wellmune WGP daily reported 43 fewer days of symptoms than their classmates who received a placebo. Biothera, the Immune Health Company, 651-675-0300,www.biothera.com