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Medicines > classes: [[:Category:Antisecretory_agents|Gastric acid suppressant]] & onset: Acid suppression within hours; full effect after 3-5 days of dosing

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generic:
Esomeprazole (1)
brand:
Nexium, Nexium 24HR (OTC) (1)
classes: (Click arrow to add another value)
mechanism:
'"`UNIQ--vote-000008E1-QINU`"' Like omeprazole, it is an acid-activated prodrug that covalently and irreversibly binds the H+/K+ ATPase. CYP2C19 PGx remains clinically relevant for both'"`UNIQ--ref-000008E2-QINU`"'. (1)
uses:
'"`UNIQ--vote-000008E3-QINU`"', '"`UNIQ--vote-000008E4-QINU`"', '"`UNIQ--vote-000008E5-QINU`"', '"`UNIQ--vote-000008E6-QINU`"', '"`UNIQ--vote-000008E7-QINU`"' (1)
starting dose:
20-40 mg PO once daily, 30-60 minutes before breakfast (1)
preparations:
20, 40 mg delayed-release capsules; 2.5, 5, 10, 20, 40 mg oral suspension packets; 20, 40 mg IV (1)
fda max:
40 mg/d typical; up to 240 mg/d for Zollinger-Ellison (1)
routes:
IV (1) · Oral (1)
onset: (Click arrow to add another value)
duration:
24-72 hours per dose (irreversible enzyme binding) (1)
halflife:
~1.5 hours (plasma); pharmacodynamic effect 24+ hours via target turnover'"`UNIQ--ref-000008E8-QINU`"' (1)
bioavailability:
~64-90% (oral; increases at higher doses and with multi-day dosing)'"`UNIQ--ref-000008E9-QINU`"' (1)
pregnancy:
Widely used in obstetric reflux; reassuring data.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)
legal:
OTC (20 mg, 14-day course) and [[USLegal:Prescription only|Rx-only]] (higher and longer durations) in US (1)

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