Drilldown: Medicines

Bisoprolol (1) · Memantine ER / Donepezil (1) · Nebivolol (1) · Valproate (valproic acid, divalproex sodium, sodium valproate) (1)

Bystolic (1) · Depakote, Depakote ER, Depakene, Depacon (IV) (1) · Namzaric (1) · Zebeta (1)

Beta Blocker (2) · Cardioselective (β1) (1) · Cardioselective (β1) + vasodilator (1) · Combined cholinesterase inhibitor + NMDA antagonist (1) · [[:Category:Antiepileptics|Antiepileptic]] (1) · [[:Category:Migraine_prophylaxis|Migraine prophylaxis]] (1) · [[:Category:Mood_stabilizers|Mood stabilizer]] (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-00000975-QINU`"' Hyperammonemic encephalopathy (consider in any unexplained CNS depression), thrombocytopenia, and polycystic ovary syndrome are characteristic chronic-use adverse effects beyond hepatic and pancreatic risks'"`UNIQ--ref-00000976-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-00000977-QINU`"', '"`UNIQ--vote-00000978-QINU`"', '"`UNIQ--vote-00000979-QINU`"', '"`UNIQ--vote-0000097A-QINU`"', '"`UNIQ--vote-0000097B-QINU`"' (1)

2.5–5 mg daily (HTN); 1.25 mg daily (HFrEF, slow titration) (1) · 5 mg daily (1) · For patients already stable on memantine 28 mg/d + donepezil 10 mg/d, switch to one capsule daily of equivalent strength (1) · Seizures: 10-15 mg/kg/d divided BID-TID, titrate to therapeutic level (50-100 mcg/mL); bipolar mania: 750 mg/d divided, titrate (1)

125, 250, 500 mg delayed-release tablets (Depakote); 250, 500 mg ER tablets (Depakote ER); 125, 250 mg sprinkle capsules; 250 mg/5 mL syrup; 500 mg IV (Depacon) (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)

20 mg/d (1) · 28/10 mg/d (1) · 40 mg/d (1) · 60 mg/kg/d (typically up to 3000 mg/d) (1)

IV (1) · Oral (3) · Oral (capsule whole or opened/sprinkled on applesauce) (1) · rectal (off-label use of injection) (1)

1–2 h (2) · Anticonvulsant effect within days; mood-stabilizing effect 1-3 weeks (1) · Component effects accumulate over weeks (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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9-16 hours'"`UNIQ--ref-0000097C-QINU`"' (1) · 9–12 h (1) · ~10 h (CYP2D6 extensive metabolizers); up to 31 h (poor metabolizers) (1) · ~60–80 h (memantine); ~70 h (donepezil) (1)

~100% (oral); highly (~90%) protein-bound, with non-linear binding above therapeutic levels (free fraction matters clinically in hypoalbuminemia)'"`UNIQ--ref-0000097D-QINU`"' (1) · ~100% both components (1) · ~12% (extensive metabolizers); ~96% (poor metabolizers) (1) · ~90% (low first-pass) (1)

'''Contraindicated for migraine prophylaxis in pregnancy; high teratogenic risk''' (neural tube defects, craniofacial anomalies, cardiac defects, cognitive/IQ impairment); avoid in women of childbearing potential without reliable contraception when alternatives exist'"`UNIQ--ref-0000097E-QINU`"' (1) · Category C (2) · Not relevant (geriatric problem) (1)

Rx-only in US (3) · [[USLegal:Prescription only|Rx-only]] in US. Carries '''Boxed Warnings''' for hepatotoxicity (especially children <2 with metabolic disorders), teratogenicity, and pancreatitis'"`UNIQ--ref-0000097F-QINU`"' (1)