Definition: Pentobarbital is a medication that acts as an anaesthetic, specifically for the purpose of sedation. It works by blocking the action of acetylcholine, which is a neurotransmitter in the brain that regulates muscle activity and sensation. When used to treat conditions like epilepsy or severe pain, pentobarbital can cause symptoms such as drowsiness, confusion, and agitation, but it's important to use it under the guidance of a doctor. It should be administered only by