Drilldown: Medicines

Fexofenadine (1)

Allegra, Allegra Allergy 24 Hour, Mucinex Allergy (combo) — all now OTC in US (1)

[[:Category:Antihistamines|Antihistamine]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist (second-generation)]] (1)

'"`UNIQ--vote-00000CC9-QINU`"' Mostly excreted unchanged in feces and urine; P-glycoprotein substrate (the basis of the fruit-juice interaction). (1)

'"`UNIQ--vote-00000CCA-QINU`"', '"`UNIQ--vote-00000CCB-QINU`"' (1)

None · ~10 units SC at the same time daily, or 0.1-0.2 units/kg/d; titrate by fasting glucose · '''5 mg PO at bedtime for women, 5-10 mg for men''' (per FDA's 2013 sex-specific dose reduction for women due to slower clearance). Ambien CR 6.25 mg women / 6.25-12.5 mg men. Intermezzo SL 1.75 mg women / 3.5 mg men · 0.25 mg · 0.4 mg PO daily (general prevention); 0.8-1 mg/d in pregnancy; 4 mg/d for women with prior NTD-affected pregnancy; 1 mg/d during methotrexate therapy · 0.4 mg PO once daily, 30 minutes after the same meal each day · 0.5 mg PO once daily · 0.5-1 mg PO/IV once or twice daily; titrate to clinical response. Approximate equipotency: bumetanide 1 mg ≈ furosemide 40 mg ≈ torsemide 20 mg · 0.5-2 mg/kg/d divided or single morning dose for acute conditions; lowest effective dose for chronic conditions, with planned taper · 0.5-3 mg PO 30-60 minutes before bedtime. Some patients respond to micro-doses (0.3 mg) without additional benefit at higher doses. For circadian phase shifting, timing relative to dim-light melatonin onset matters more than absolute dose · 0.5–1 oz (10–30 g) ground for psychoactive effect; far smaller for culinary use · 0.75 mg SC weekly'"`UNIQ--ref-00000053-QINU`"' · 1 capsule (20/10 mg dextromethorphan/quinidine) PO once daily × 7 days, then 1 capsule BID · 1 drop in affected eye(s) TID (monotherapy); BID with timolol (Cosopt) · 1 drop in the affected eye(s) once daily in the evening · 1 drop in the affected eye(s) once daily in the evening (Lumigan); Latisse applied to upper lash line at bedtime · 1 g PO QID on an empty stomach (1 hour before meals and at bedtime); 1 g BID for maintenance · 1 mg at bedtime (PTSD nightmares); 1 mg BID–TID (HTN) · 1 mg PO at bedtime to limit first-dose syncope; titrate weekly to 5-10 mg · 1 mg PO once daily

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30, 60, 180 mg tablets; 30 mg ODT; 6 mg/mL oral suspension; all OTC (1)

180 mg/d (adults) (1)

Oral (1)

None · Hours · 30-60 minutes · 1-2 hours · ~30 min · LDL lowering at 2 weeks, max by 4 weeks · ~1 hour · 15-30 minutes · 15–30 min · 1–2 h · 30–60 min · Antidepressant effect emerges over 1-2 weeks · BP and symptomatic LUTS improvement within 1-2 weeks · BP effect within 1-2 weeks · Clinical improvement within 24-72 hours · Days · Motor improvement over days at therapeutic dose · Over weeks · Postprandial glucose effect within days; HbA1c by 12 weeks · Sleep effect from first dose; antidepressant effect over 1-4 weeks

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12-24 hours (1)

~14 hours'"`UNIQ--ref-00000CCC-QINU`"' (1)

~33% (oral; fruit juices including grapefruit, orange, and apple reduce absorption substantially via OATP1A2 inhibition — distinctive interaction not seen with most other H1s)'"`UNIQ--ref-00000CCD-QINU`"' (1)

Generally considered safe; loratadine and cetirizine have more pregnancy data and are typically preferred.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC in US (1)