Thiopental, also known as sodium thiopental, is a barbiturate drug used as a general anesthetic. There are various synonyms for thiopental, which include trapanal, pentothal, trapanal sodium, thiopentalum natricum, and thiopental sodium. Trapanal and pentothal are the most commonly used synonyms for thiopental in medical settings. Thiopental is a fast-acting anesthetic, which can cause unconsciousness within seconds, and has a relatively short duration of action. It is primarily used during surgery, convulsive therapy, and in emergency situations to induce anesthesia. While thiopental is considered to be a safe and effective anesthetic, its use can cause side effects such as respiratory depression, hypotension, and bradycardia.