Pseudoephedrine (n or n; PSE) is a sympathomimetic drug of the phenethylamine and amphetamine chemical classes. It may be used as a nasal/sinus decongestant, as a stimulant, or as a wakefulness-promoting agent. The salts pseudoephedrine hydrochloride and pseudoephedrine sulfate are found in many over-the-counter preparations, either as a single in... Found on http://en.wikipedia.org/wiki/Pseudoephedrine
(soo″do-ә-fed´rin) one of the optical isomers of ephedrine, used in the form of the hydrochloride and sulfate salts as a nasal decongestant; administered orally. Found on http://www.encyclo.co.uk/local/21001