Millions of injection of sodium thiopental have been clinically used since it was introduced by Lundy in 1934. As with other barbiturates, cutaneous allergic manifestation are rather frequently seen, but reports of anaphlyactic reactions are rare. Probably many cases have not been recognized or have been misdiagnosed. It is believed that some cases of unexplained collapse or even death after thiopental inductions are very possibly due to an unrecognized anaphylactic action. This report presents a case of anaphylactic action due to injection of sodium thiopental and the references were reviewed.