Precursor to metabolite: Hydroxyzine IM to Cetirizine

Hydroxyzine IM is converted to Cetirizine by alcohol/aldehyde dehydrogenase.

Cetirizine mascot — mnemonic cartoon — Cetirizine — mascot

The pair

Hydroxyzine IM — Intramuscular sedating antihistamine for acute anxiety, nausea, and perioperative adjunct use.
Cetirizine — Fast, effective second-generation H1 antihistamine; more sedating than its peers.

Hydroxyzine IM · Cetirizine · Open Hydroxyzine IM in the interactive console ↗