diphenhydramine

Diphenhydramine is an ether that is the benzhydryl ether of 2-(dimethylamino)ethanol. It is a H1-receptor antagonist used as a antipruritic and antitussive drug. It has a role as a oneirogen, a sedative, a local anaesthetic, a H1-receptor antagonist, an antiparkinson drug, a muscarinic antagonist, an anti-allergic agent, an antiemetic, an antitussive, an antipruritic drug and an antidyskinesia agent. It is an ether and a tertiary amino compound.