A long-acting oral or parenteral sedative, anticonvulsant, and hypnotic; also available as a soluble sodium salt; also used in therapeutic management of epilepsy and induction of hepatic microsomal enzymes. SYN: phenylethylbarbituric acid, phenylethylmalonylurea.
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phe·no·bar·bi·tal .fē-nō-'bär-bə-.tȯl, -tȧl n a crystalline barbiturate C12H12N2O3 that is used orally or is administered by injection in the form of its sodium salt C12H11N2NaO3 as a hypnotic and sedative see LUMINAL
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n.
a barbiturate drug that has been used as an anticonvulsant in the treatment of epilepsy, but is no longer commonly prescribed. It is administered by mouth or injection; side-effects may include drowsiness and skin sensitivity reactions, and dependence may result from continued use.
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phe·no·bar·bi·tal (fe″no-bahrґbĭ-təl) [USP] a long-acting barbiturate, used as a sedative, hypnotic, and anticonvulsant, administered orally.Medical dictionary. 2011.