Drilldown: Medicines

Loratadine (1) · Lovastatin (1) · Pravastatin (1)

Altoprev (ER), Mevacor (discontinued US); mostly generic (1) · Claritin, Alavert, Tavist ND (1) · Pravachol (1)

[[:Category:Antihistamines|Antihistamine]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist (second-generation)]] (1) · [[:Category:Lipid-lowering_agents|Lipid-lowering agent]] (2) · [[:Category:Statins|Statin]] (2)

None (1) · '"`UNIQ--vote-000003D1-QINU`"' SLCO1B1 polymorphism affects exposure but is most clinically actionable for simvastatin'"`UNIQ--ref-000003D2-QINU`"'. (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-000003D3-QINU`"', '"`UNIQ--vote-000003D4-QINU`"' (1) · '"`UNIQ--vote-0000061F-QINU`"', '"`UNIQ--vote-00000620-QINU`"' (1) · '"`UNIQ--vote-00000805-QINU`"', '"`UNIQ--vote-00000806-QINU`"' (1)

10 mg PO once daily (1) · 20 mg PO once daily with the evening meal; titrate to 40-80 mg/d (1) · 40 mg PO once daily (10-20 mg in elderly, hepatic impairment, or strong drug interactions) (1)

10 mg tablets; 5 mg ODT and chewables; 1 mg/mL oral syrup; combo Claritin-D (with pseudoephedrine, behind-counter) (1) · 10 mg, 20 mg, 40 mg, 80 mg tablets (1) · 10, 20, 40 mg tablets; 20, 40, 60 mg ER tablets (1)

10 mg/d (adults) (1) · 80 mg/d (1) · 80 mg/d (40 mg/d if combined with diltiazem, verapamil, danazol; lower limits with various interactions) (1)

Oral (3)

None · Hours · 30-60 minutes · 1-2 hours · ~30 min · LDL lowering at 2 weeks, max by 4 weeks · ~1 hour · 15-30 minutes · 15–30 min · 1–2 h · 30–60 min · Antidepressant effect emerges over 1-2 weeks · BP and symptomatic LUTS improvement within 1-2 weeks · BP effect within 1-2 weeks · Clinical improvement within 24-72 hours · Days · Motor improvement over days at therapeutic dose · Over weeks · Postprandial glucose effect within days; HbA1c by 12 weeks · Sleep effect from first dose; antidepressant effect over 1-4 weeks

Other values:

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None · 24 hours · 4-6 hours · 12 hours · 6-8 hours · Daily dosing · 8-12 hours · 12-24 hours · Hours · Hours per application · 24 hours (HS dosing) · 24 hours (once-daily dosing) · 24 h · N/A · N/A (replacement) · Variable · ~7-8 hours · 3-5 hours · 4-6 hours (IR); 24 hours (ER) · 6-12 hours

Other values:

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~2-3 hours (parent); pharmacodynamic effect 24 hours via target turnover'"`UNIQ--ref-000003D5-QINU`"' (1) · ~2-4 hours (parent and active β-hydroxy acid metabolite); pharmacodynamic effect 24 hours via target turnover'"`UNIQ--ref-00000807-QINU`"' (1) · ~8 hours (parent); ~28 hours (desloratadine, the active metabolite, marketed separately as Clarinex)'"`UNIQ--ref-00000621-QINU`"' (1)

<5% (extensive hepatic first-pass; food enhances absorption of IR, hence the evening-meal dosing)'"`UNIQ--ref-00000808-QINU`"' (1) · High (oral; food prolongs absorption modestly)'"`UNIQ--ref-00000622-QINU`"' (1) · ~17% (oral; food slightly reduces absorption)'"`UNIQ--ref-000003D6-QINU`"' (1)

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.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Previously Category X; FDA removed the blanket statin contraindication in pregnancy in 2021.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (2)

OTC in US (1) · [[USLegal:Prescription only|Rx-only]] in US (2)