Drilldown: Medicines
Medicines > fda max 
:
20 mg/d or
4 mg/d (schizophrenia); 3 mg/d (AD agitation); 3 mg/d (MDD adjunct) or
No fixed maximum; titrated to TSH target
:
20 mg/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) ·
Beta Blocker (1) ·
Cardioselective (β1) (1) ·
D2/5HT1A partial agonist with stronger α1A (1) ·
Dual orexin receptor antagonist (DORA) (1) ·
Multimodal antidepressant: SERT inhibitor + 5HT1A agonist + 5HT1B partial agonist + 5HT3/5HT7 antagonist (1) ·
PDE5 Inhibitor (1) ·
the first approved (1) ·
[[:Category:Alpha-1_blockers|Alpha-1 adrenergic blocker (non-selective)]] (1) ·
[[:Category:Antihypertensives|Antihypertensive]] (1) ·
[[:Category:BPH_treatments|Benign prostatic hyperplasia treatment]] (1) ·
[[:Category:Hormone_replacement|Hormone replacement]] (2) ·
[[:Category:Thyroid_hormones|Thyroid hormone]] (2)
mechanism:
None (1) ·
Competitive antagonist at OX1R and OX2R. First-in-class DORA. Receptor dissociation slower than lemborexant or daridorexant. (1) ·
Highly β1-selective adrenergic antagonist. Greater selectivity than metoprolol or atenolol. (1) ·
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) ·
Selective inhibitor of PDE5. Slightly higher PDE5/PDE6 selectivity vs sildenafil (less visual side effect) but more PDE1 cross-activity (occasional QT effects at high 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-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-0000111B-QINU`"' Intraoperative floppy iris syndrome is a recognized class effect. Recently emerging evidence (observational) suggests possible Parkinson's disease risk reduction via PGK1 binding — investigational and not a clinical indication'"`UNIQ--ref-0000111C-QINU`"'. (1)
uses:
Insomnia (sleep onset and/or maintenance) in adults (FDA-approved August 2014). Also studied for insomnia in mild-moderate Alzheimer disease. (1) ·
Major depressive disorder in adults (FDA-approved 2013). Notable for evidence of cognitive benefit (processing speed) that distinguishes it from other antidepressants. (1) ·
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-00000636-QINU`"', '"`UNIQ--vote-00000637-QINU`"', '"`UNIQ--vote-00000638-QINU`"' (1) ·
'"`UNIQ--vote-00000669-QINU`"' (1) ·
'"`UNIQ--vote-0000111D-QINU`"', '"`UNIQ--vote-0000111E-QINU`"' (1)
starting dose:
1 mg PO at bedtime to limit first-dose syncope; titrate weekly to 5-10 mg (1) ·
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) ·
10 mg PO 30 min before bedtime (with ≥7 hours of sleep planned) (1) ·
10 mg PO once daily; may increase to 20 mg as tolerated, or decrease to 5 mg if needed (1) ·
10 mg ~1 h before sexual activity (1) ·
2.5–5 mg daily (HTN); 1.25 mg daily (HFrEF, slow titration) (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) ·
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) ·
1, 2, 5, 10 mg capsules and tablets (1) ·
15, 30, 60, 90, 120, 180, 240, 300 mg tablets (1/4 to 5 grains; 1 grain = 60 mg) (1) ·
2.5, 5, 10, 20 mg tabs (Levitra); 10 mg ODT (Staxyn) (1) ·
25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300 mcg tablets; oral capsule and IV/IM also available (1) ·
5 mg, 10 mg, 15 mg, 20 mg tablets (1) ·
5 mg, 10 mg, 20 mg tablets (1) ·
5, 10 mg tabs (1)
fda max: (Click arrow to add another value)
onset:
1–2 h (1) ·
BP and symptomatic LUTS improvement within 1-2 weeks (1) ·
TSH normalization 4-8 weeks (1) ·
TSH normalization 4-8 weeks; symptomatic improvement weeks to months (1) ·
Typical antidepressant 4-6 week onset (1) ·
Weeks for psychosis/depression; AD agitation benefit emerges over weeks (1) ·
~30 min (2)
duration:
halflife:
4–5 h (1) ·
9–12 h (1) ·
T4 ~7 days; T3 ~1 day'"`UNIQ--ref-0000001A-QINU`"' (1) ·
~12 hours (1) ·
~12 hours'"`UNIQ--ref-0000111F-QINU`"' (1) ·
~66 hours (1) ·
~7 days (euthyroid); longer in hypothyroidism (~9-10 days), shorter in hyperthyroidism'"`UNIQ--ref-00000036-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; not significantly affected by food)'"`UNIQ--ref-00001120-QINU`"' (1) ·
Variable; reduced by food, calcium, iron, PPIs'"`UNIQ--ref-0000001B-QINU`"' (1) ·
~15% (extensive hepatic first-pass) (1) ·
~75% (1) ·
~82% (1) ·
~90% (low first-pass) (1) ·
~95% (1)
pregnancy:
Category B (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) ·
Limited data.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Limited data; avoid (1) ·
Limited data; National Pregnancy Registry available (1) ·
Limited data; weigh benefits/risks (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 8 results in range #1 to #8.