Sedatives are a class of drugs that are used to induce relaxation, calmness, and sleep. They work by depressing the central nervous system, slowing down brain activity and reducing anxiety and agitation. Sedatives are commonly prescribed for short-term treatment of insomnia, anxiety disorders, and as pre-anesthetic medications before surgery. They can be classified into different categories based on their potency and duration of action, such as benzodiazepines, barbiturates, and non-benzodiazepine sedative-hypnotics. However, sedatives can be habit-forming and have potential side effects, including drowsiness, dizziness, impaired coordination, memory problems, and in some cases, respiratory depression. Therefore, they should be used under medical supervision and as prescribed.