Definition
Thiopental is a fast-acting barbiturate, mainly used as an anesthetic to induce unconsciousness before surgery. It works by slowing down the activity of the brain and nervous system. Think of it as a 'power off' button for your brain, but a temporary one. It's like hitting the snooze button, but for your entire consciousness. It is also sometimes employed to control seizures. Its effects are rapid and short-lived, which is why it's favored for initial anesthesia.