A sedative is any prescription medication that slows the activity of your central nervous system (brain and spinal cord). A sedative, or tranquilizer, [note 1] is a substance that induces sedation by reducing irritability or excitement. They are central nervous system (CNS) … The meaning of SEDATIVE is tending to calm, moderate, or tranquilize nervousness or excitement. How to use sedative in a sentence. a drug that has a calming effect: If your pet is unaccustomed to car travel, consider a mild sedative to help relieve its anxiety. Sedatives are drugs that can be used to calm or relax the body. They can be used to help people sleep, to relieve anxiety, or to calm down a person who is … What are sedatives? ยท Sedatives are a broad class of prescription medications that slow the brain\’s activity (depressants) and have addiction potential, … What is it? Sedative-hypnotic drugs – sometimes called \”depressants\” – and anxiolytic (anti-anxiety) drugs slow down the activity of the brain. Sedatives are a diverse group of drugs manufactured for medical purposes to relax the central nervous system. Also known as tranquillizers or central … Sedatives are a type of prescription medication that slows down your brain activity. They\’re typically used to make you feel more relaxed.