In last week’s installment of Medical Discovery News, UTMB’s Norbert Herzog and David Niesel discuss energy drinks. “Energy drinks are popular with young people because they claim to give you extra pep. They contain ingredients such as tuarine, guarana, ginseng, B-vitamins and, most of all, lots of caffeine.” MDN airs locally at 10 a.m. every Saturday on KUHF-FM.