Otolaryngologists and ENT physicians are the same. ENT=Ears, Nose, and Throat - Oto=ear, laryng=throat (the nose, or rhino, was dropped some years ago). Otolaryngologists go through 1 year of general surgery training and an additional 4-5 years of specialty head and neck surgery.
But many popular brands actually contain considerably less than an old-fashioned cup of black coffee. An 8.4-ounce serving of Red Bull, for instance, has a relatively modest 76 to 80 mg of caffeine, compared to the 95 to 200 mg in a typical cup of coffee, the Mayo Clinic reports.
A 200-milligram serving of caffeine is equivalent to approximately two 8-ounce cups of coffee, four 8-ounce cups of tea, three shots of espresso or two cans of Red Bull. A dark chocolate bar contains approximately half that amount of caffeine, while a Venti Starbucks coffee is double this amount.