Pheneturide (INN, BAN) (brand names Benuride, Deturid, Pheneturid, Septotence, Trinuride),[1] also known as phenylethylacetylurea (or ethylphenacemide), is an anticonvulsant of the ureide class.[2][3] Conceptually, it can be formed in the body as a metabolic degradation product from phenobarbital. It is considered to be obsolete[4] and is now seldom used.[5] It is marketed in Europe, including in Poland, Spain and the United Kingdom.[6] Pheneturide has a similar profile of anticonvulsant activity and toxicity relative to phenacemide.[7][8] As such, it is only used in cases of severe epilepsy when other, less-toxic drugs have failed.[8] Pheneturide inhibits the metabolism and thus increases the levels of other anticonvulsants, such as phenytoin.[5][6]