NCIt definition : A piperazine histamine H1 receptor antagonist with primarily antiemetic and antivertigo
activities. Buclizine binds to and blocks the histamine H1 receptor, thereby preventing
the symptoms that are caused by histamine activity. Buclizine exerts its anti-emetic
effect by binding to and blocking the muscarinic and histamine receptors in the vomiting
center of the central nervous system (CNS). This may prevent activation of the chemoreceptor
trigger zone (CTZ) and may reduce nausea and vomiting.;