Thiopental is a short-acting barbiturate used primarily as an anesthetic. It works by depressing the central nervous system, leading to sedation and loss of consciousness. Thiopental is often administered intravenously and is commonly used for induction in general anesthesia. In addition to its use in surgery, thiopental has been utilized in lethal injection protocols for capital punishment. Its rapid onset and short duration of action make it effective for quickly rendering a patient unconscious. However, due to safety concerns and the potential for abuse, its use has declined in favor of newer anesthetic agents.