Drilldown: Medicines
Medicines > onset 
:
1-3 hours (slower onset than cetirizine; symptom relief somewhat less) or
1–2 h or
BP and symptomatic LUTS improvement within 1-2 weeks
:
1-3 hours (slower onset than cetirizine; symptom relief somewhat less) or
1–2 h or
BP and symptomatic LUTS improvement within 1-2 weeks Use the filters below to narrow your results.
generic:
brand:
classes:
Beta Blocker (2) ·
Cardioselective (β1) (1) ·
Cardioselective (β1) + vasodilator (1) ·
[[:Category:Alpha-1_blockers|Alpha-1 adrenergic blocker (non-selective)]] (2) ·
[[:Category:Antihistamines|Antihistamine]] (1) ·
[[:Category:Antihypertensives|Antihypertensive]] (2) ·
[[:Category:BPH_treatments|Benign prostatic hyperplasia treatment]] (2) ·
[[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist (second-generation)]] (1)
mechanism:
None (1) ·
Highly β1-selective adrenergic antagonist. Greater selectivity than metoprolol or atenolol. (1) ·
The d-enantiomer is a highly β1-selective antagonist; the l-enantiomer triggers endothelial nitric-oxide–mediated vasodilation. Unique among beta blockers for this NO mechanism. (1) ·
'"`UNIQ--vote-0000061E-QINU`"' Less reliably anticholinergic than first-generation H1s; minimal antiemetic effect. Desloratadine (Clarinex) is the active enantiomer-of-metabolite version marketed as a Rx alternative. (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:
'"`UNIQ--vote-0000059D-QINU`"' (1) ·
'"`UNIQ--vote-0000061F-QINU`"', '"`UNIQ--vote-00000620-QINU`"' (1) ·
'"`UNIQ--vote-00000636-QINU`"', '"`UNIQ--vote-00000637-QINU`"', '"`UNIQ--vote-00000638-QINU`"' (1) ·
'"`UNIQ--vote-00000AAD-QINU`"', '"`UNIQ--vote-00000AAE-QINU`"', '"`UNIQ--vote-00000AAF-QINU`"' (1) ·
'"`UNIQ--vote-0000111D-QINU`"', '"`UNIQ--vote-0000111E-QINU`"' (1)
starting dose:
preparations:
fda max:
routes:
onset: (Click arrow to add another value)
duration:
halflife:
9–12 h (1) ·
~10 h (CYP2D6 extensive metabolizers); up to 31 h (poor metabolizers) (1) ·
~12 hours'"`UNIQ--ref-0000111F-QINU`"' (1) ·
~22 hours'"`UNIQ--ref-00000AB0-QINU`"' (1) ·
~8 hours (parent); ~28 hours (desloratadine, the active metabolite, marketed separately as Clarinex)'"`UNIQ--ref-00000621-QINU`"' (1)
bioavailability:
>90% (oral; not significantly affected by food)'"`UNIQ--ref-00001120-QINU`"' (1) ·
High (oral; food prolongs absorption modestly)'"`UNIQ--ref-00000622-QINU`"' (1) ·
~12% (extensive metabolizers); ~96% (poor metabolizers) (1) ·
~65% (oral)'"`UNIQ--ref-00000AB1-QINU`"' (1) ·
~90% (low first-pass) (1)
pregnancy:
Category C (2) ·
Generally considered safe; widely used. Loratadine and cetirizine are the most-recommended 2nd-gen H1s in pregnancy and lactation.<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; rarely indicated in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1)
Showing below up to 5 results in range #1 to #5.