What is Nembutal (Pentobarbital Sodium)? Nembutal is the brand name for Pentobarbital Sodium, a powerful barbiturate with sedative, hypnotic, and anticonvulsant properties. It was widely used in medical practice during the 20th century to treat severe insomnia, induce anesthesia before surgery, and manage seizures. Pentobarbital acts by depressing the central nervous system (CNS). In smaller […]