Drilldown: Medicines
Medicines > onset 
:
Benefit over weeks of dosing or
Motor improvement over days at therapeutic dose or
~30 min
:
Benefit over weeks of dosing or
Motor improvement over days at therapeutic dose or
~30 min Use the filters below to narrow your results.
generic:
brand:
classes:
mechanism:
None (3) ·
Competitive antagonist at OX1R and OX2R. Faster receptor association/dissociation kinetics than suvorexant (~16 sec dissociation vs ~57 sec) hypothesized to support sleep onset, with sufficient duration for maintenance. (1) ·
Competitive antagonist at OX1R and OX2R. First-in-class DORA. Receptor dissociation slower than lemborexant or daridorexant. (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) ·
Selective inverse agonist at 5HT2A receptors with weaker activity at 5HT2C. Has no significant dopamine D2 affinity, unique among approved antipsychotics. Inverse agonism (rather than antagonism) reduces constitutive 5HT2A receptor activity below baseline. (1)
uses:
Hallucinations and delusions associated with Parkinson's disease psychosis (PDP). Investigational for psychosis in other dementias and as augmentation for depression. (1) ·
Insomnia (sleep onset and/or maintenance) in adults (FDA-approved August 2014). Also studied for insomnia in mild-moderate Alzheimer disease. (1) ·
Insomnia (sleep onset and/or maintenance) in adults (FDA-approved Dec 2019) (1) ·
Insomnia (sleep onset and/or sleep maintenance) in adults (FDA-approved Jan 2022) (1) ·
'"`UNIQ--vote-00000013-QINU`"', '"`UNIQ--vote-00000014-QINU`"' (1) ·
'"`UNIQ--vote-00000017-QINU`"', '"`UNIQ--vote-00000018-QINU`"', '"`UNIQ--vote-00000019-QINU`"', '"`UNIQ--vote-0000001A-QINU`"' (1) ·
'"`UNIQ--vote-00000669-QINU`"' (1)
starting dose:
10 mg PO 30 min before bedtime (with ≥7 hours of sleep planned) (1) ·
10 mg ~1 h before sexual activity (1) ·
25 mg PO at bedtime (no titration); may increase to 50 mg if 25 mg inadequate (1) ·
34 mg PO once daily (1) ·
5 mg PO at bedtime; may increase to 10 mg if inadequate (1) ·
Parkinson disease: 0.125 mg PO TID, titrate weekly to maintenance ~1.5 mg TID. Restless legs syndrome: 0.125 mg PO 2-3 hours before bedtime, titrate to 0.5 mg/day if needed (1) ·
Parkinson disease: 0.25 mg PO TID, titrate weekly. Restless legs syndrome: 0.25 mg PO 1-3 hours before bedtime, titrate to 4 mg/day if needed (1)
preparations:
10 mg, 34 mg capsules/tablets (1) ·
2.5, 5, 10, 20 mg tabs (Levitra); 10 mg ODT (Staxyn) (1) ·
25 mg, 50 mg tablets (1) ·
5 mg, 10 mg tablets (1) ·
5 mg, 10 mg, 15 mg, 20 mg tablets (1) ·
IR tablets 0.125, 0.25, 0.5, 0.75, 1, 1.5 mg; ER tablets 0.375, 0.75, 1.5, 2.25, 3, 3.75, 4.5 mg (1) ·
IR tablets 0.25, 0.5, 1, 2, 3, 4, 5 mg; XL tablets 2, 4, 6, 8, 12 mg (1)
fda max:
routes:
onset: (Click arrow to add another value)
duration:
halflife:
4–5 h (1) ·
8-12 hours (longer in elderly and renal impairment)'"`UNIQ--ref-0000001B-QINU`"' (1) ·
~12 hours (1) ·
~17-19 hours (longer than daridorexant) (1) ·
~57 hours (parent), ~200 h (active metabolite) (1) ·
~6 hours'"`UNIQ--ref-00000015-QINU`"' (1) ·
~8 hours (shorter than suvorexant and lemborexant) (1)
bioavailability:
pregnancy:
Category B (1) ·
Limited data; avoid (4) ·
Limited human data.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Limited human data; rarely indicated in pregnancy given the typical patient population.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1)
Showing below up to 7 results in range #1 to #7.