水合氯醛(chloral hydrate)是一种比较安全的长时间作用催眠药,用于失眠、烦燥不安及惊厥,疗效肯定,作用及吸收均快,不易引起蓄积中毒。其突出特点是不缩短快波睡眠时间,醒后无头昏思睡等不适感,此点优于巴比妥类催眠药。但是由于其味道不好,并且对胃肠道有刺激性,服用前需加水稀释。现多用于灌肠,因而使应用范围受到限制。 Chloral hydrate is a safer long-acting hypnotic drug used for insomnia, irritability and convulsions, efficacy is positive, the role and absorption are fast, difficult to cause accumulation of poisoning. Its prominent feature is not to shorten the fast wave sleep time, wake up without dizziness and other discomfort, which is better than barbiturates hypnotics. However, due to its poor taste and gastrointestinal irritation, it should be diluted with water before taking it. Now more for enema, thus limiting the scope of application.