藥物和煙酒等刺激物
各種各樣的合法和不合規定的藥物或刺激物可能影響人體的性反應。在某些病例，某些藥物或刺激物可能改善性反應，但是，大多數具有消極的效應，尤其使用時間過長時，消極作用更甚。典型的例子是酒精，它起初可能具有受歡迎的放鬆作用，但是，然後迅速導致損害作用。正如在莎士比亞的悲劇“馬克白(Macbeth)”裏的守門人所準確地評說的那樣“飲酒激發性欲，但是會奪去性行為過程的樂趣”。以下圖表概述了大多數常用藥物對性反應的作用。不過，請您注意：在任何具體的病例中，這些常用的刺激物或藥物的作用極大地依當事者潛在的疾病或由特殊的藥物和使用的劑量治療所帶來的問題而定。

Medication and Drugs
A variety of legal and illegal drugs can affect the human sexual response. Some may improve the response in some cases, but most have a negative effect, especially when used over longer periods of time. The classic example is alcohol which may have a welcome relaxing effect at first, but then quickly leads to impairment. As the porter in Shakespeare's "Macbeth" accurately observes: "Drinking provokes the desire, but takes away the performance." The following chart summarizes the effects of the most common drugs or medications on the sexual response. Please, note, however: In any concrete case, very much depends the underlying disease or problem being treated by a particular drug and on the dose being taken.