Drilldown: Medicines

Benzonatate (1) · Cefdinir (1) · Finasteride (1) · Linagliptin (1) · Primidone (1)

Mysoline (1) · Omnicef (discontinued in US under brand); mostly generic (1) · Proscar (5 mg, BPH), Propecia (1 mg, alopecia) (1) · Tessalon, Zonatuss (1) · Tradjenta; with metformin Jentadueto (1)

[[:Category:5-alpha-reductase_inhibitors|5α-reductase inhibitor]] (1) · [[:Category:Androgen_modulators|Androgen modulator]] (1) · [[:Category:Anticonvulsants|Anticonvulsant]] (1) · [[:Category:Antihyperglycemic_agents|Antihyperglycemic agent]] (1) · [[:Category:Antitussives|Antitussive]] (1) · [[:Category:Barbiturates|Barbiturate (parent compound)]] (1) · [[:Category:Beta-lactam_antibiotics|β-lactam antibiotic]] (1) · [[:Category:BPH_treatments|Benign prostatic hyperplasia treatment]] (1) · [[:Category:Cephalosporins|Cephalosporin (third-generation)]] (1) · [[:Category:DPP-4_inhibitors|DPP-4 inhibitor]] (1) · [[:Category:Incretin_modulators|Incretin pathway modulator]] (1) · [[:Category:Tremor medicines|Tremor medicine]] (1)

None (3) · '"`UNIQ--vote-00000013-QINU`"' Strong CYP3A4 induction via the phenobarbital metabolite produces many interactions (reduces oral contraceptives, warfarin, many psychotropics). Essential-tremor efficacy is the unique pharmacological selling point'"`UNIQ--ref-00000014-QINU`"'. (1) · '"`UNIQ--vote-00000015-QINU`"' Pediatric ingestion (capsule chewed or punctured) releases the free local anesthetic and causes seizures, cardiac arrhythmia, and death'"`UNIQ--ref-00000016-QINU`"'. (1)

'"`UNIQ--vote-00000015-QINU`"', '"`UNIQ--vote-00000016-QINU`"' (1) · '"`UNIQ--vote-00000017-QINU`"' (1) · '"`UNIQ--vote-0000052E-QINU`"', '"`UNIQ--vote-0000052F-QINU`"', '"`UNIQ--vote-00000530-QINU`"' (1) · '"`UNIQ--vote-000009DF-QINU`"', '"`UNIQ--vote-000009E0-QINU`"', '"`UNIQ--vote-000009E1-QINU`"', '"`UNIQ--vote-000009E2-QINU`"', '"`UNIQ--vote-000009E3-QINU`"' (1) · '"`UNIQ--vote-0000117B-QINU`"' (1)

100-200 mg PO TID (max 600 mg/d) (1) · 300 mg PO BID, or 600 mg PO once daily, ×5-10 days; pediatric 14 mg/kg/d (1) · 5 mg PO daily for BPH; 1 mg PO daily for androgenetic alopecia (1) · 5 mg PO once daily (no renal dose adjustment, unlike sitagliptin) (1) · Seizures: 100-125 mg PO at bedtime x 3 days, then BID, then TID, escalating to 750-1500 mg/day. Essential tremor: 25-50 mg PO at bedtime, titrate slowly to 250-750 mg/day (1)

1 mg, 5 mg tablets (1) · 100, 150, 200 mg liquid-filled capsules ("perles") (1) · 300 mg capsules; 125, 250 mg/5 mL suspension (1) · 5 mg tablets; combination with metformin (1) · Tablets 50, 250 mg (1)

None · Indication-specific · 40 mg/d · 10 mg/d · 20 mg/d · 80 mg/d · 10 mg/d (adults) · 100 mg/d · 4 g/d · 400 mg/d · 40 mg/d typical; up to 240 mg/d for Zollinger-Ellison · 5 mg/d · 50 mg/d · 600 mg/d · No fixed ceiling; titrate to clinical effect and tolerability with CDC opioid prescribing guidance constraints on morphine-milligram-equivalent (MME) totals · No fixed maximum; titrated to TSH target · TID per eye · Titrated to glucose; no fixed ceiling · Titrated to glucose; no fixed maximum · '''20 mg/day in adults >60 years''' per FDA's 2011-2012 QT-prolongation warning; 40 mg/day in adults ≤60

Other values:

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Oral (4) · Oral (swallow whole) (1)

15-20 minutes (1) · Anticonvulsant effect emerges with slow titration over weeks; tremor effect over weeks (1) · BPH symptom improvement at 3-6 months; prostate volume reduction over 6-12 months; hair regrowth at 6-12 months (1) · Hours (1) · Postprandial glucose effect within days; HbA1c by 12 weeks (1)

12-24 hours (1) · 24 hours (2) · 3-8 hours (1) · BID-TID dosing (1)

Not well characterized'"`UNIQ--ref-00000018-QINU`"' (1) · Primidone 5-15 hours; '''phenobarbital active metabolite 50-150 hours'''; PEMA (phenylethylmalonamide) active metabolite 16 hours'"`UNIQ--ref-00000017-QINU`"' (1) · ~1.7 hours'"`UNIQ--ref-000009E4-QINU`"' (1) · ~12 hours (effective); terminal much longer'"`UNIQ--ref-0000117C-QINU`"' (1) · ~5-6 hours in young men, ~8 hours in elderly'"`UNIQ--ref-00000531-QINU`"' (1)

16-21% capsule, 25% suspension (oral; iron and antacids reduce absorption substantially)'"`UNIQ--ref-000009E5-QINU`"' (1) · Not well characterized'"`UNIQ--ref-00000019-QINU`"' (1) · ~30% (oral)'"`UNIQ--ref-0000117D-QINU`"' (1) · ~63% (oral)'"`UNIQ--ref-00000532-QINU`"' (1) · ~90% (oral)'"`UNIQ--ref-00000018-QINU`"' (1)

'''Pregnant individuals should not handle crushed/broken tablets''' (skin absorption risk); can cause hypospadias in male fetus. Not used in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Generally considered safe in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited data; switch to insulin where feasible.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited human data; animal reproductive studies not conducted<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Substantial teratogenic signal (barbiturate class effects including neonatal withdrawal and hemorrhagic disease of newborn).<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

[[USLegal:Prescription only|Rx-only]] in US (4) · [[USLegal:Prescription only|Rx-only]] in US. '''Federally non-controlled despite being a barbiturate''', a paradoxical situation given that its primary active metabolite phenobarbital is Schedule IV'"`UNIQ--ref-00000019-QINU`"' (1)