Drilldown: Medicines

Apixaban (1) · Azelastine (1) · Dextromethorphan / Quinidine (1) · Doxycycline (1) · Flecainide (1) · Icosapent ethyl (eicosapentaenoic acid ethyl ester, EPA-EE) (1) · Ofloxacin (1) · Oseltamivir (1) · Phencyclidine (1) · Ticagrelor (1)

Astelin, Astepro (intranasal); Optivar (ophthalmic); with fluticasone as Dymista (1) · Brilinta (1) · Eliquis (1) · Floxin (oral, US brand discontinued); Ocuflox (ophthalmic); Floxin Otic (otic) (1) · Nuedexta (1) · Sernyl (human, withdrawn 1965); Sernylan (veterinary, withdrawn 1978) (1) · Tambocor (US brand discontinued) (1) · Tamiflu (1) · Vascepa (1) · Vibramycin, Doryx, Oracea, Adoxa, Monodox, Acticlate (1)

None (1) · [[:Category:Anesthetics|Anesthetic (historical)]] (1) · [[:Category:Anti-influenza_agents|Anti-influenza agent]] (1) · [[:Category:Antiarrhythmics|Antiarrhythmic (Vaughan-Williams class IC)]] (1) · [[:Category:Antibacterials|Antibacterial]] (1) · [[:Category:Anticoagulants|Anticoagulant]] (1) · [[:Category:Antiplatelet_agents|Antiplatelet agent]] (1) · [[:Category:Antivirals|Antiviral]] (1) · [[:Category:Arylcyclohexylamines|Arylcyclohexylamine]] (1) · [[:Category:Bacteriostatic_antibiotics|Bacteriostatic antibiotic]] (1) · [[:Category:Cyclopentyltriazolopyrimidines|Cyclopentyltriazolopyrimidine]] (1) · [[:Category:Direct_factor_Xa_inhibitors|Direct factor Xa inhibitor]] (1) · [[:Category:Dissociatives|Dissociative]] (1) · [[:Category:DOACs|Direct oral anticoagulant (DOAC)]] (1) · [[:Category:Fluoroquinolones|Fluoroquinolone antibiotic]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist]] (1) · [[:Category:Intranasal_antihistamines|Intranasal antihistamine]] (1) · [[:Category:Lipid-lowering_agents|Lipid-lowering agent]] (1) · [[:Category:Mast_cell_stabilizers|Mast cell stabilizer]] (1) · [[:Category:Neuraminidase_inhibitors|Neuraminidase inhibitor]] (1) · [[:Category:NMDA_receptor_antagonists|NMDA receptor antagonist]] (1) · [[:Category:Omega-3_fatty_acids|Omega-3 fatty acid]] (1) · [[:Category:P2Y12_inhibitors|P2Y12 receptor inhibitor (reversible)]] (1) · [[:Category:Sigma-1_receptor_agonists|Sigma-1 receptor agonist]] (1) · [[:Category:Tetracycline_antibiotics|Tetracycline antibiotic]] (1)

None (5) · '"`UNIQ--vote-000001F6-QINU`"' CYP3A4 (primary) and P-glycoprotein substrate; strong dual inhibitors or inducers materially shift exposure. Reversal: andexanet alfa for life-threatening bleeding; 4F-PCC commonly used off-label when andexanet unavailable'"`UNIQ--ref-000001F7-QINU`"'. (1) · '"`UNIQ--vote-0000113A-QINU`"' Concomitant β-blocker or CCB is required when used for AF to prevent 1:1 atrial flutter conduction (flecainide can slow atrial rate to a level where AV conduction allows dangerous ventricular rates). CYP2D6 substrate'"`UNIQ--ref-0000113B-QINU`"'. (1) · '"`UNIQ--vote-000013B1-QINU`"' Topical application minimizes systemic antihistaminic burden; the characteristic bitter taste with nasal use (drainage to oropharynx) is the main tolerability issue'"`UNIQ--ref-000013B2-QINU`"'. (1) · '"`UNIQ--vote-000014BC-QINU`"' Topical ophthalmic and otic formulations remain widely used in ENT and ophthalmology. Subject to all fluoroquinolone-class restrictions (tendinitis/rupture, peripheral neuropathy, QT prolongation)'"`UNIQ--ref-000014BD-QINU`"'. (1) · '"`UNIQ--vote-00001580-QINU`"' First FDA-approved treatment for PBA. The 10 mg quinidine daily dose is far below antiarrhythmic levels but sufficient to nearly fully inhibit CYP2D6, the basis of the combination's pharmacokinetic rationale'"`UNIQ--ref-00001581-QINU`"'. (1)

'"`UNIQ--vote-00000063-QINU`"', '"`UNIQ--vote-00000064-QINU`"' (1) · '"`UNIQ--vote-000001F8-QINU`"', '"`UNIQ--vote-000001F9-QINU`"', '"`UNIQ--vote-000001FA-QINU`"' (1) · '"`UNIQ--vote-00000475-QINU`"', '"`UNIQ--vote-00000476-QINU`"', '"`UNIQ--vote-00000477-QINU`"', '"`UNIQ--vote-00000478-QINU`"', '"`UNIQ--vote-00000479-QINU`"', '"`UNIQ--vote-0000047A-QINU`"', '"`UNIQ--vote-0000047B-QINU`"', '"`UNIQ--vote-0000047C-QINU`"' (1) · '"`UNIQ--vote-00000C8F-QINU`"', '"`UNIQ--vote-00000C90-QINU`"', '"`UNIQ--vote-00000C91-QINU`"' (1) · '"`UNIQ--vote-00000E91-QINU`"', '"`UNIQ--vote-00000E92-QINU`"', '"`UNIQ--vote-00000E93-QINU`"' (1) · '"`UNIQ--vote-0000113C-QINU`"', '"`UNIQ--vote-0000113D-QINU`"', '"`UNIQ--vote-0000113E-QINU`"' (1) · '"`UNIQ--vote-000013B3-QINU`"', '"`UNIQ--vote-000013B4-QINU`"', '"`UNIQ--vote-000013B5-QINU`"' (1) · '"`UNIQ--vote-000013CF-QINU`"', '"`UNIQ--vote-000013D0-QINU`"' (1) · '"`UNIQ--vote-000014BE-QINU`"', '"`UNIQ--vote-000014BF-QINU`"', '"`UNIQ--vote-000014C0-QINU`"', '"`UNIQ--vote-000014C1-QINU`"', '"`UNIQ--vote-000014C2-QINU`"' (1) · '"`UNIQ--vote-00001582-QINU`"' (1)

1 capsule (20/10 mg dextromethorphan/quinidine) PO once daily × 7 days, then 1 capsule BID (1) · 100 mg PO BID; rickettsial 200 mg/d; doxy-PEP 200 mg within 72 hours after condomless sex (1) · 2 g PO BID with meals (4 g/d total) (1) · 50 mg PO BID; titrate to 100-200 mg BID; pill-in-pocket 200-300 mg PO single dose for AF conversion (1) · ACS/PCI: 180 mg PO loading dose, then 90 mg PO BID for 12 months; long-term post-MI: 60 mg BID (1) · Intranasal 0.1% or 0.15%: 1-2 sprays/nostril BID; ophthalmic 0.05%: 1 drop in each eye BID (1) · No current medical indication. Historical anesthetic dose 0.25 mg/kg IV (Sernyl). (1) · NVAF: 5 mg PO BID (2.5 mg BID if 2 of 3: age ≥80, weight ≤60 kg, serum creatinine ≥1.5 mg/dL); acute VTE: 10 mg BID for 7 days, then 5 mg BID (1) · Oral 200-400 mg BID; ophthalmic 1-2 drops in affected eye(s) q2-4h initially, then taper; otic 5-10 drops in affected ear BID (1) · Treatment: 75 mg PO BID × 5 days (adult); pediatric weight-based; prophylaxis: 75 mg PO once daily × 7-10 days (1)

0.1%, 0.15% intranasal spray; 0.05% ophthalmic solution; combination Dymista (azelastine 0.137 mg + fluticasone 50 mcg/spray) (1) · 0.5 g, 1 g capsules (1) · 2.5 mg, 5 mg tablets (1) · 20 mg dextromethorphan HBr / 10 mg quinidine sulfate capsules (1) · 200, 300, 400 mg tablets (mostly generic now); 0.3% ophthalmic solution; 0.3% otic solution (1) · 30, 45, 75 mg capsules; 6 mg/mL oral suspension (1) · 50 mg, 75 mg, 100 mg, 150 mg tablets and capsules; delayed-release; suspension; IV (1) · 50, 100, 150 mg tablets (1) · 60, 90 mg tablets (1) · Historical: Sernyl 25 mg tablets, 10 mg/mL injection (human); Sernylan 100 mg/mL injection (veterinary). Illicit: white crystalline powder, oily liquid, "dipped" cigarettes ("wet"), tablets. (1)

1 capsule BID (40 mg DXM / 20 mg quinidine per day) (1) · 10 mg BID for the first 7 days of acute VTE; otherwise 5 mg BID (1) · 150 mg/d (treatment) (1) · 2 sprays/nostril BID (1) · 4 g/d (1) · 400 mg/d (1) · 800 mg/d (1) · 90 mg BID (acute year); 60 mg BID (chronic post-MI) (1) · N/A (no current medical indication) (1) · ~200 mg/d for most indications; higher doses for severe infections (1)

IM (1) · insufflated (1) · Intranasal (1) · IV (2) · ophthalmic (1) · Oral (9) · otic (1) · smoked (1) · topical ophthalmic (1)

15 minutes (1) · AF conversion within hours of single PO dose (1) · Antiplatelet effect within 30 minutes of loading dose (faster than clopidogrel) (1) · Hours (2) · PBA episode reduction within 1-2 weeks (1) · Peak anticoagulant effect 3-4 hours (1) · Smoked 2-5 min; insufflated 5-15 min; oral 30-60 min; IV / IM ~5-15 min (1) · Symptom shortening detectable within 24-48 hours of starting (small absolute benefit; ~1 day reduction in symptom duration) (1) · Triglyceride lowering at 4-8 weeks; CV benefit emerges over months (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:

Search

16-22 hours'"`UNIQ--ref-0000047D-QINU`"' (1) · Dextromethorphan substantially prolonged by quinidine's CYP2D6 inhibition (typical extensive metabolizers see ~10× higher AUC); quinidine ~6-8 hours'"`UNIQ--ref-00001583-QINU`"' (1) · Highly variable, 7-46 hours (mean ~21 h); lipophilic deposition in fat with delayed re-release contributes to wide range'"`UNIQ--ref-00000065-QINU`"' (1) · ~12 hours'"`UNIQ--ref-000001FB-QINU`"' (1) · ~14 hours (adults); longer in elderly and renal impairment'"`UNIQ--ref-0000113F-QINU`"' (1) · ~22 hours; longer 54 hours (desmethylazelastine, active metabolite)'"`UNIQ--ref-000013B6-QINU`"' (1) · ~6-10 hours (oseltamivir carboxylate, the active metabolite)'"`UNIQ--ref-00000E94-QINU`"' (1) · ~7 hours (parent); ~9 hours (active AR-C124910XX metabolite, accounts for ~30-40% of activity)'"`UNIQ--ref-00000C92-QINU`"' (1) · ~89 hours (EPA, the active metabolite)'"`UNIQ--ref-000013D1-QINU`"' (1) · ~9 hours'"`UNIQ--ref-000014C3-QINU`"' (1)

Increased substantially via CYP2D6 inhibition'"`UNIQ--ref-00001584-QINU`"' (1) · Intranasal ~40% systemic; ophthalmic minimal'"`UNIQ--ref-000013B7-QINU`"' (1) · Substantially improved with high-fat meal; take with food'"`UNIQ--ref-000013D2-QINU`"' (1) · ~36% (oral)'"`UNIQ--ref-00000C93-QINU`"' (1) · ~50% (oral; not significantly affected by food)'"`UNIQ--ref-000001FC-QINU`"' (1) · ~72% oral; ~85% smoked'"`UNIQ--ref-00000066-QINU`"' (1) · ~75% (oral, as the active carboxylate after hepatic esterase activation)'"`UNIQ--ref-00000E95-QINU`"' (1) · ~90% (oral)'"`UNIQ--ref-00001140-QINU`"' (1) · ~95% (oral)'"`UNIQ--ref-000014C4-QINU`"' (1) · ~95% (oral; reduced by dairy, antacids, iron via divalent-cation chelation, though less than for tetracycline itself)'"`UNIQ--ref-0000047E-QINU`"' (1)

None (3) · '''Avoid in pregnancy where alternatives exist''' (animal cartilage toxicity; class-wide concern).<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Generally used when influenza treatment is indicated; pregnancy is a recognized risk factor for severe influenza.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited data.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited data; quinidine has been used in pregnancy as antiarrhythmic.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited data; second-line to intranasal corticosteroids or PO loratadine/cetirizine.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited data; weigh against alternatives.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Use in fetal SVT (transplacental antiarrhythmic therapy) is established; otherwise weigh against alternatives.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC (Astepro 0.15%) and [[USLegal:Prescription only|Rx-only]] (other intranasal, ophthalmic, Dymista) in US (1) · [[USLegal:DEA Schedule II|Schedule II]] controlled substance in US (rescheduled from Schedule III in 1978). No accepted medical use. UN Convention on Psychotropic Substances Schedule II internationally.'"`UNIQ--ref-00000067-QINU`"' (1) · [[USLegal:Prescription only|Rx-only]] in US (4) · [[USLegal:Prescription only|Rx-only]] in US. '''Contraindicated in structural heart disease''' — CAST trial (1989) showed increased mortality from class IC agents in patients with prior MI; modern use is limited to structurally normal hearts'"`UNIQ--ref-00001141-QINU`"' (1) · [[USLegal:Prescription only|Rx-only]] in US. Carries a '''Boxed Warning''' for bleeding risk and against aspirin maintenance doses above 100 mg/d (reduces ticagrelor efficacy, per PLATO subgroup analysis)'"`UNIQ--ref-00000C94-QINU`"' (1) · [[USLegal:Prescription only|Rx-only]] in US. Carries the same fluoroquinolone-class '''Boxed Warnings''' as ciprofloxacin/levofloxacin'"`UNIQ--ref-000014C5-QINU`"' (1) · [[USLegal:Prescription only|Rx-only]] in US. Caution with QT-prolonging medicines (quinidine itself is class IA antiarrhythmic, and the dose here, though sub-antiarrhythmic, still contributes to QT)'"`UNIQ--ref-00001585-QINU`"' (1)