Pseudoephedrine

Pseudoephedrine ( /ˌsjuːdoʊ.ɨˈfɛdrɪn/ or /ˌsjuːdoʊˈɛfɨdriːn/; 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 ingredient or (more commonly) in combination with antihistamines, guaifenesin, dextromethorphan, paracetamol (acetaminophen), or an NSAID (such as aspirin or ibuprofen).

Read more about Pseudoephedrine:  Chemistry, Nomenclature, Synthesis, Mechanism of Action, Medical Uses, Other Uses