Drilldown: Medicines

Methimazole (thiamazole) (1)

Tapazole; outside US Mercazole (1)

[[:Category:Antithyroid_agents|Antithyroid agent]] (1) · [[:Category:Thionamides|Thionamide]] (1)

'"`UNIQ--vote-00000ECD-QINU`"' Agranulocytosis is the most-feared adverse effect (~0.3%, usually first 90 days of treatment; warn patients to seek urgent CBC for fever or severe sore throat). Hepatotoxicity is class-recognized but more often associated with PTU'"`UNIQ--ref-00000ECE-QINU`"'. (1)

'"`UNIQ--vote-00000ECF-QINU`"', '"`UNIQ--vote-00000ED0-QINU`"', '"`UNIQ--vote-00000ED1-QINU`"', '"`UNIQ--vote-00000ED2-QINU`"' (1)

10-40 mg PO daily depending on hyperthyroidism severity; titrate by clinical and biochemical response (target TSH/free T4) (1)

5, 10 mg tablets (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

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Oral (1)

Biochemical improvement within 2-4 weeks; full euthyroid state 6-12 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

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~4-6 hours (plasma); intrathyroidal accumulation gives a much longer functional duration'"`UNIQ--ref-00000ED3-QINU`"' (1)

~93% (oral)'"`UNIQ--ref-00000ED4-QINU`"' (1)

None (1)

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