Drilldown: Medicines

Bisoprolol (1) · Epinephrine (adrenaline) (1) · Memantine ER / Donepezil (1) · Nebivolol (1)

Bystolic (1) · EpiPen, EpiPen Jr, Auvi-Q, Adrenaclick, Symjepi; many generic (1) · Namzaric (1) · Zebeta (1)

Beta Blocker (2) · Cardioselective (β1) (1) · Cardioselective (β1) + vasodilator (1) · Combined cholinesterase inhibitor + NMDA antagonist (1) · [[:Category:Catecholamines|Catecholamine]] (1) · [[:Category:Inotropes|Inotrope]] (1) · [[:Category:Sympathomimetics|Sympathomimetic]] (1) · [[:Category:Vasopressors|Vasopressor]] (1)

Donepezil: reversible AChE inhibitor, increases synaptic acetylcholine. Memantine: uncompetitive low-affinity NMDA receptor antagonist, dampens pathological glutamate overactivation while preserving normal synaptic signaling. Targets two distinct mechanisms in Alzheimer's. (1) · Highly β1-selective adrenergic antagonist. Greater selectivity than metoprolol or atenolol. (1) · The d-enantiomer is a highly β1-selective antagonist; the l-enantiomer triggers endothelial nitric-oxide–mediated vasodilation. Unique among beta blockers for this NO mechanism. (1) · '"`UNIQ--vote-00000E4A-QINU`"' The narrow safe-bolus window for IV use (sharp risk of arrhythmia, hypertensive emergency, intracerebral hemorrhage) is why anaphylaxis dosing is '''IM, not IV''', outside critical care'"`UNIQ--ref-00000E4B-QINU`"'. (1)

'"`UNIQ--vote-00000468-QINU`"' (1) · '"`UNIQ--vote-0000059D-QINU`"' (1) · '"`UNIQ--vote-00000636-QINU`"', '"`UNIQ--vote-00000637-QINU`"', '"`UNIQ--vote-00000638-QINU`"' (1) · '"`UNIQ--vote-00000E4C-QINU`"', '"`UNIQ--vote-00000E4D-QINU`"', '"`UNIQ--vote-00000E4E-QINU`"', '"`UNIQ--vote-00000E4F-QINU`"', '"`UNIQ--vote-00000E50-QINU`"', '"`UNIQ--vote-00000E51-QINU`"' (1)

2.5–5 mg daily (HTN); 1.25 mg daily (HFrEF, slow titration) (1) · 5 mg daily (1) · Anaphylaxis IM 0.3-0.5 mg (adult) into lateral thigh, repeat q5-15 minutes prn; pediatric 0.01 mg/kg IM (max 0.3 mg, max 0.5 mg in adolescents); cardiac arrest 1 mg IV/IO q3-5 minutes; severe asthma neb 0.1 mg/kg up to 5 mg; never IV bolus for anaphylaxis outside critical care (1) · For patients already stable on memantine 28 mg/d + donepezil 10 mg/d, switch to one capsule daily of equivalent strength (1)

2.5, 5, 10, 20 mg tabs (1) · 5, 10 mg tabs (1) · 7/10, 14/10, 21/10, 28/10 mg ER capsules (memantine ER / donepezil) (1) · Auto-injectors 0.15 mg (Jr/pediatric), 0.3 mg (adult); 1 mg/mL (1:1,000) ampules for IM/SC use; 0.1 mg/mL (1:10,000) for IV use; 2.25% racemic nebulizer (1)

20 mg/d (1) · 28/10 mg/d (1) · 40 mg/d (1) · Indication-specific; ACLS no fixed cumulative ceiling (1)

endotracheal (legacy ACLS (1) · IM (1) · intracardiac (historical only) (1) · IV (1) · nebulized (1) · not preferred) (1) · Oral (2) · Oral (capsule whole or opened/sprinkled on applesauce) (1) · SC (less common) (1)

1–2 h (2) · Component effects accumulate over weeks (1) · IM: 5-10 minutes; IV: seconds; nebulized: 5-10 minutes (1)

None · 24 hours · 4-6 hours · 12 hours · 6-8 hours · Daily dosing · 8-12 hours · 12-24 hours · Hours · Hours per application · 24 hours (HS dosing) · 24 hours (once-daily dosing) · 24 h · N/A · N/A (replacement) · Variable · ~7-8 hours · 3-5 hours · 4-6 hours (IR); 24 hours (ER) · 6-12 hours

Other values:

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9–12 h (1) · ~10 h (CYP2D6 extensive metabolizers); up to 31 h (poor metabolizers) (1) · ~2 minutes'"`UNIQ--ref-00000E52-QINU`"' (1) · ~60–80 h (memantine); ~70 h (donepezil) (1)

IM/SC ~100%; oral negligible (extensive first-pass and gut metabolism — hence the no-oral route)'"`UNIQ--ref-00000E53-QINU`"' (1) · ~100% both components (1) · ~12% (extensive metabolizers); ~96% (poor metabolizers) (1) · ~90% (low first-pass) (1)

Category C (2) · Not relevant (geriatric problem) (1) · Used in life-threatening obstetric anaphylaxis without hesitation; benefits clearly outweigh.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

Rx-only in US (3) · [[USLegal:Prescription only|Rx-only]] in US (1)