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.
Instant coffee, also called soluble coffee because it dissolves in water, contains an average of 93 milligrams of caffeine in a prepared 8-ounce serving, according to the Center for Science in the Public Interest. The range of caffeine content in an 8-ounce cup of instant coffee is 27 to 173 milligrams. The same amount of regular brewed coffee contains an average of 133 milligrams of caffeine, with a range of 102 to 200 milligrams. The type of coffee beans and brewing methods affect the caffeine content in coffee.