Dioxifedrine (), or dioxifedrin, also known as ñ-methylepinephrine or as 3,4-dihydroxyephedrine, is a sympathomimetic medication that was never marketed. It is described as a ò-adrenergic receptor agonist and bronchodilator. The drug is a substituted phenethylamine and amphetamine and is the catecholamine (3,4-dihydroxylated) derivative of ephedrine and the amphetamine (ñ-methylated) analogue of epinephrine (adrenaline). Analogues of dioxifedrine include dioxethedrin (ñ-methyl-N-ethylnorepinephrine), corbadrine (levonordefrin; ñ-methylnorepinephrine), and ñ-methyldopamine.