Drilldown: Medicines
Use the filters below to narrow your results.
generic:
brand:
Armour Thyroid, NP Thyroid, Nature-Throid, WP Thyroid (1) ·
Avelox (oral/IV brand discontinued US); Vigamox, Moxeza (ophthalmic) (1) ·
Keflex, Daxbia, Panixine; mostly prescribed generically (1) ·
Lopressor (tartrate), Toprol XL (succinate) (1) ·
Lovaza, Omtryg (1) ·
Synthroid, Levoxyl, Tirosint, Unithroid, Euthyrox (1) ·
Tambocor (US brand discontinued) (1) ·
Vascepa (1)
classes:
Beta Blocker (1) ·
Cardioselective (β1) (1) ·
[[:Category:Antiarrhythmics|Antiarrhythmic (Vaughan-Williams class IC)]] (1) ·
[[:Category:Antibacterials|Antibacterial]] (1) ·
[[:Category:Beta-lactam_antibiotics|β-lactam antibiotic]] (1) ·
[[:Category:Cephalosporins|Cephalosporin (first-generation)]] (1) ·
[[:Category:Fluoroquinolones|Fluoroquinolone antibiotic]] (1) ·
[[:Category:Hormone_replacement|Hormone replacement]] (2) ·
[[:Category:Lipid-lowering_agents|Lipid-lowering agent]] (2) ·
[[:Category:Omega-3_fatty_acids|Omega-3 fatty acid]] (2) ·
[[:Category:Thyroid_hormones|Thyroid hormone]] (2)
mechanism:
None (2) ·
Cardioselective β1-adrenergic antagonist. Selectivity is dose-dependent and partially lost at higher doses. (1) ·
Synthetic T4 (thyroxine); peripherally deiodinated to T3 (triiodothyronine), the active hormone. '"`UNIQ--vote-00000031-QINU`"' Narrow therapeutic index; brand-to-generic switches can shift TSH and require re-titration'"`UNIQ--ref-00000032-QINU`"'. (1) ·
'"`UNIQ--vote-00000032-QINU`"' Brand-to-brand and lot-to-lot variability in T3:T4 ratio is greater than with synthetic levothyroxine, which is why endocrine guidelines prefer the synthetic'"`UNIQ--ref-00000033-QINU`"'. (1) ·
'"`UNIQ--vote-0000004E-QINU`"' The EPA+DHA mix is biochemically and clinically distinct from icosapent ethyl'"`UNIQ--ref-0000004F-QINU`"'. (1) ·
'"`UNIQ--vote-00000D7A-QINU`"' Substantial QT-interval prolongation — the most QT-prolonging fluoroquinolone — limits use in patients on other QT-prolonging agents or with electrolyte abnormalities'"`UNIQ--ref-00000D7B-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)
uses:
'"`UNIQ--vote-00000033-QINU`"', '"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) ·
'"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) ·
'"`UNIQ--vote-00000050-QINU`"' (1) ·
'"`UNIQ--vote-000004ED-QINU`"', '"`UNIQ--vote-000004EE-QINU`"', '"`UNIQ--vote-000004EF-QINU`"', '"`UNIQ--vote-000004F0-QINU`"', '"`UNIQ--vote-000004F1-QINU`"' (1) ·
'"`UNIQ--vote-000004F5-QINU`"', '"`UNIQ--vote-000004F6-QINU`"', '"`UNIQ--vote-000004F7-QINU`"', '"`UNIQ--vote-000004F8-QINU`"', '"`UNIQ--vote-000004F9-QINU`"' (1) ·
'"`UNIQ--vote-00000D7C-QINU`"', '"`UNIQ--vote-00000D7D-QINU`"', '"`UNIQ--vote-00000D7E-QINU`"', '"`UNIQ--vote-00000D7F-QINU`"', '"`UNIQ--vote-00000D80-QINU`"', '"`UNIQ--vote-00000D81-QINU`"' (1) ·
'"`UNIQ--vote-0000113C-QINU`"', '"`UNIQ--vote-0000113D-QINU`"', '"`UNIQ--vote-0000113E-QINU`"' (1) ·
'"`UNIQ--vote-000013CF-QINU`"', '"`UNIQ--vote-000013D0-QINU`"' (1)
starting dose:
1.6 mcg/kg/d in young healthy adults; 25-50 mcg/d in elderly or cardiac disease, titrated by TSH at 6-8 weeks (1) ·
2 g PO BID with meals (4 g/d total) (1) ·
25–50 mg BID (tartrate); 25–100 mg daily (succinate); 12.5 mg daily in HFrEF (1) ·
30 mg PO daily (1/2 grain); titrate by TSH at 6-8 weeks; 60 mg desiccated thyroid is approximately equivalent to 88-100 mcg levothyroxine (1) ·
4 g PO daily (as 4 x 1 g capsules once daily, or 2 capsules BID) (1) ·
400 mg PO/IV once daily (1) ·
50 mg PO BID; titrate to 100-200 mg BID; pill-in-pocket 200-300 mg PO single dose for AF conversion (1) ·
500 mg PO every 6 hours, or 250 mg every 6 hours for mild infections (1)
preparations:
0.5 g, 1 g capsules (1) ·
1 g soft gelatin capsules containing ~465 mg EPA + ~375 mg DHA as ethyl esters (1) ·
15, 30, 60, 90, 120, 180, 240, 300 mg tablets (1/4 to 5 grains; 1 grain = 60 mg) (1) ·
25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300 mcg tablets; oral capsule and IV/IM also available (1) ·
250 mg, 500 mg, 750 mg capsules; 250 mg/5 mL, 125 mg/5 mL suspension; tablets (1) ·
400 mg tablets; 400 mg/250 mL IV; 0.5% ophthalmic solution (1) ·
50, 100, 150 mg tablets (1) ·
Tartrate: 25, 50, 100 mg tabs; 1 mg/mL IV. Succinate ER: 25, 50, 100, 200 mg. (1)
fda max: (Click arrow to add another value)
routes:
onset:
1–2 h (PO); immediate (IV) (1) ·
AF conversion within hours of single PO dose (1) ·
Hours (2) ·
Triglyceride lowering at 2-4 weeks; max at 8 weeks (1) ·
Triglyceride lowering at 4-8 weeks; CV benefit emerges over months (1) ·
TSH normalization 4-8 weeks (1) ·
TSH normalization 4-8 weeks; symptomatic improvement weeks to months (1)
duration:
halflife:
3–7 h (1) ·
Not well characterized; tissue incorporation over weeks'"`UNIQ--ref-00000051-QINU`"' (1) ·
T4 ~7 days; T3 ~1 day'"`UNIQ--ref-00000036-QINU`"' (1) ·
~1 hour'"`UNIQ--ref-000004F2-QINU`"' (1) ·
~12 hours'"`UNIQ--ref-00000D82-QINU`"' (1) ·
~14 hours (adults); longer in elderly and renal impairment'"`UNIQ--ref-0000113F-QINU`"' (1) ·
~7 days (euthyroid); longer in hypothyroidism (~9-10 days), shorter in hyperthyroidism'"`UNIQ--ref-00000036-QINU`"' (1) ·
~89 hours (EPA, the active metabolite)'"`UNIQ--ref-000013D1-QINU`"' (1)
bioavailability:
40-80% (oral); reduced by food, calcium, iron, PPIs, fiber; take fasting with water'"`UNIQ--ref-00000037-QINU`"' (1) ·
90% (oral; food delays but does not reduce absorption)'"`UNIQ--ref-000004F3-QINU`"' (1) ·
Improved with food'"`UNIQ--ref-00000052-QINU`"' (1) ·
Substantially improved with high-fat meal; take with food'"`UNIQ--ref-000013D2-QINU`"' (1) ·
Variable; reduced by food, calcium, iron, PPIs'"`UNIQ--ref-00000037-QINU`"' (1) ·
~50% (1) ·
~90% (oral)'"`UNIQ--ref-00001140-QINU`"' (1) ·
~90% (oral; not affected by food but reduced by divalent cations)'"`UNIQ--ref-00000D83-QINU`"' (1)
pregnancy:
'''Avoid in pregnancy where alternatives exist''' (animal cartilage toxicity).<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Category C (1) ·
First-line in pregnancy; dose typically increased 25-30% due to estrogen-driven rise in TBG and fetal demand. Lactation safe at physiologic doses.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Generally considered safe; widely used.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Limited data.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Limited human data<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Synthetic levothyroxine is the standard-of-care in pregnancy; desiccated thyroid use in pregnancy is not well studied<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</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.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1)
legal:
Rx-only in US (1) ·
[[USLegal:Prescription only|Rx-only]] in US (5) ·
[[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 the same fluoroquinolone-class '''Boxed Warnings''' as ciprofloxacin/levofloxacin'"`UNIQ--ref-00000D84-QINU`"' (1)
Showing below up to 8 results in range #1 to #8.