tramadol 338Results 3 58 383 registered patients aged 6–18 years between 1 January 2003 and 31 December 2013 provided a total of 19 20 338 person338 (50.6%). Ear and labyrinth disorders. Verto. 3 (1.4%). 3 (1.0%). 8 (1.5%). 27 (2.5%). 3 (0.4%). Gastrointestinal disorders. Abdominal pain.