https://wikem.org/w/index.php?action=history&feed=atom&title=Hydroxyzine 2026-04-18T07:25:56Z Revision history for this page on the wiki MediaWiki 1.38.2 https://wikem.org/w/index.php?title=Hydroxyzine&diff=372045&oldid=prev 2023-12-01T08:19:46Z

<p>Created page with &quot;==General== *Type: <a href="/wiki/Antihistamines" title="Antihistamines">Antihistamines</a> / H1 blocker *Dosage Forms: Oral, IM *Common Trade Names: Atarax ==Adult Dosing== *<a href="/wiki/Anxiety" class="mw-redirect" title="Anxiety">Anxiety</a> **PO: 50-100mg q6h PRN **IM: 50-100mg q4-6h PRN *<a href="/wiki/Allergic_reaction" class="mw-redirect" title="Allergic reaction">Allergic reaction</a> or <a href="/wiki/Pruritus" title="Pruritus">Pruritus</a> **PO: 25mg q6-8h *<a href="/wiki/Nausea" class="mw-redirect" title="Nausea">Nausea</a>/<a href="/wiki/Vomiting" class="mw-redirect" title="Vomiting">Vomiting</a> **IM: 25-100mg q6-8h PRN *<a href="/wiki/Insomnia" title="Insomnia">Insomnia</a> **PO: 50-100mg PO qhs **IM: 50mg qhs ==Pediatric Dosing== *<a href="/wiki/Anxiety" class="mw-redirect" title="Anxiety">Anxiety</a> or <a href="/wiki/Pruritus" title="Pruritus">Pruritus</a> **&lt;6 yo ***PO: 50mg/day divided into q6-8h PRN **6-12 yo ***PO: 50-100mg/day divi...&quot;</p> <p><b>New page</b></p><div>==General==<br /> *Type: [[Antihistamines]] / H1 blocker<br /> *Dosage Forms: Oral, IM<br /> *Common Trade Names: Atarax<br /> <br /> ==Adult Dosing==<br /> *[[Anxiety]]<br /> **PO: 50-100mg q6h PRN<br /> **IM: 50-100mg q4-6h PRN<br /> <br /> *[[Allergic reaction]] or [[Pruritus]]<br /> **PO: 25mg q6-8h<br /> <br /> *[[Nausea]]/[[Vomiting]]<br /> **IM: 25-100mg q6-8h PRN <br /> <br /> *[[Insomnia]]<br /> **PO: 50-100mg PO qhs<br /> **IM: 50mg qhs<br /> <br /> ==Pediatric Dosing==<br /> *[[Anxiety]] or [[Pruritus]]<br /> **&lt;6 yo<br /> ***PO: 50mg/day divided into q6-8h PRN<br /> **6-12 yo<br /> ***PO: 50-100mg/day divided into q6-8h PRN<br /> **&gt;12 yo<br /> ***See adult dosing<br /> <br /> *[[Nausea]]/[[Vomiting]]<br /> **IM: 1.1mg/kg/dose <br /> <br /> ==Special Populations==<br /> *[[Drug pregnancy categories|Pregnancy Rating]]: No human data available<br /> *Renal Dosing: CrCl &lt;50: decrease usual dose by 50%<br /> *Hepatic Dosing: n/a<br /> <br /> ==Contraindications==<br /> *Allergy to class/drug<br /> *Elderly patients<br /> *QT prolongation<br /> <br /> ==Adverse Reactions==<br /> ===Serious===<br /> *[[Anticholinergic toxicity]]<br /> *CNS depression<br /> *[[Seizures]]<br /> *Torsades de pointes<br /> ===Common===<br /> *Sedation<br /> *Dizziness<br /> *Headache<br /> <br /> ==Pharmacology==<br /> *Half-life: Children 7 hours, Adults 3-20 hours, Elderly &gt;20 hours<br /> *Metabolism: Hepatic, CYP450<br /> *Excretion: Urine<br /> *Mechanism of Action: Nonselective antagonism of central/peripheral H1 receptors<br /> <br /> ==See Also==<br /> *[[Antihistamines]]<br /> *[[Anticholinergic toxicity]]<br /> <br /> ==References==<br /> &lt;references/&gt;<br /> <br /> [[Category:Pharmacology]]</div>

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