Pentothal is a commonly used anesthetic drug in the medical field. It is also known as thiopental, which is the generic name for this drug. Other synonyms for pentothal include sodium thiopental, thiopentone sodium, and trapanal. These drugs are used to induce anesthesia, reduce anxiety, and alleviate pain during surgery. Sodium thiopental is also used in some countries for lethal injections, although its use for this purpose is controversial and highly debated. While pentothal and its synonyms have been effective in medical procedures, it can have potential side effects such as respiratory depression, low blood pressure, and even death if not administered properly.