Benzedrine is the trade name of the racemic mixture of amphetamine (dl-amphetamine). The drug was often referred to as "bennies" by users and in literature. It was marketed under this brand name in the United States by Smith, Kline & French in the form of inhalers, starting in 1933. Benzedrine was used medically to enlarge nasal and bronchial passages until it was discontinued and replaced with compounds with weaker psychoactive properties (e.g., ephedrine, levomethamphetamine, and propylhexedrine).