A sleeping draught is a traditional term that describes a type of medication or potion that is used to promote or induce sleep. However, there are numerous other terms that can be used to describe this type of medication. Some of the common synonyms for sleeping draught include sleeping pill, sedative, hypnotic, tranquillizer, soporific, knock-out drops, and sleep aid. Each of these terms may have slightly different implications concerning the properties and effects of the medication, but they are all ultimately designed to help a person sleep or relax. Regardless of which term you use, it is important to follow the instructions carefully and talk to your doctor before taking any sleep-inducing medication.