Chloral Hydrate
a white crystalline substance, forming a neutral aqueous solution if free from HCl. It produces sleep, but only acts as an anodyne during sleep, the pain returning as soon as the patient wakes. The habitual use of this drug is followed by profound melancholy and enfeeblement suicidal insanity. It was discovered by and muscular lassitude of will, and muscular lassitude and Dr. O. Liebreich.