In the U.S. military and other uses, a no-go pill refers to a hypnotic medication taken to ensure adequate rest in preparation for upcoming tasks or for rest and recovery. As of November 2012, medications approved as no-go pills by the U.S. Air Force for Special Operations include:
Historically, in the Anglo-British Western military domain, the government-legitimized fighter pilot was, conservatively and under medical doctor scrutiny, given in med-kit containers absent from no flight, both low-dose Dexedrine and relevantly, diazepam, for either one or the other extremity of condition (fatigue or sleeplessness) and amelioration thereof.