Drilldown: Medicines
Medicines > fda max 
:
4 g/d or
4 mg/d (schizophrenia); 3 mg/d (AD agitation); 3 mg/d (MDD adjunct) or
No fixed maximum; titrated to TSH target
:
4 g/d or
4 mg/d (schizophrenia); 3 mg/d (AD agitation); 3 mg/d (MDD adjunct) or
No fixed maximum; titrated to TSH target Use the filters below to narrow your results.
generic:
brand:
classes:
5HT1A activity than aripiprazole (1) ·
5HT2A (1) ·
Atypical antipsychotic (1) ·
D2/5HT1A partial agonist with stronger α1A (1) ·
[[:Category:Beta-lactam_antibiotics|β-lactam antibiotic]] (1) ·
[[:Category:Cephalosporins|Cephalosporin (first-generation)]] (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) ·
Partial agonist at D2 and 5HT1A. Antagonist at 5HT2A, α1A, α1B, α2C. More potent 5HT2A antagonism, 5HT1A partial agonism, and α1 antagonism (relative to D2 partial agonism) than aripiprazole, proposed to reduce akathisia and enhance affective/cognitive effects. (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-00000016-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-00000017-QINU`"'. (1) ·
'"`UNIQ--vote-0000004E-QINU`"' The EPA+DHA mix is biochemically and clinically distinct from icosapent ethyl'"`UNIQ--ref-0000004F-QINU`"'. (1)
uses:
Schizophrenia (FDA-approved 2015). Adjunctive treatment of major depressive disorder (2015). '''Agitation associated with dementia due to Alzheimer disease''' (FDA-approved May 2023, first agent specifically approved for this problem). Investigational for PTSD (combined with sertraline). (1) ·
'"`UNIQ--vote-00000018-QINU`"', '"`UNIQ--vote-00000019-QINU`"' (1) ·
'"`UNIQ--vote-00000033-QINU`"', '"`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-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) ·
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) ·
500 mg PO every 6 hours, or 250 mg every 6 hours for mild infections (1) ·
Schizophrenia: 1 mg PO daily × 4 days, then 2 mg daily × 3 days, then 4 mg daily. MDD adjunct: 0.5-1 mg daily, increase to 2 mg max. AD agitation: 0.5 mg daily, titrate to 2-3 mg daily. (1)
preparations:
0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg tablets (1) ·
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)
fda max: (Click arrow to add another value)
onset:
Hours (1) ·
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) ·
Weeks for psychosis/depression; AD agitation benefit emerges over weeks (1)
duration:
halflife:
Not well characterized; tissue incorporation over weeks'"`UNIQ--ref-00000051-QINU`"' (1) ·
T4 ~7 days; T3 ~1 day'"`UNIQ--ref-0000001A-QINU`"' (1) ·
~1 hour'"`UNIQ--ref-000004F2-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) ·
~91 hours (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-0000001B-QINU`"' (1) ·
~95% (1)
pregnancy:
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 data; National Pregnancy Registry available (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.'"`UNIQ--ref-0000001C-QINU`"' (1)
Showing below up to 6 results in range #1 to #6.