Modafinilo, Carim, Vigia ) A prescription drug used for the treatment of narcolepsy , shift work sleep disorder , and excessive daytime sleepiness associated with obstructive sleep apnea . 1,2,3 Nausea/vomiting Nausea is an uneasiness of the stomach that often precedes vomiting. Vomiting is the forcible voluntary or involuntary emptying of stomach contents