Drilldown: Medicines

Fexofenadine (1) · Glimepiride (1) · Nitrofurantoin (1)

Allegra, Allegra Allergy 24 Hour, Mucinex Allergy (combo) — all now OTC in US (1) · Amaryl (1) · Macrobid (monohydrate/macrocrystals), Macrodantin (macrocrystals), Furadantin (suspension) (1)

[[:Category:Antibacterials|Antibacterial]] (1) · [[:Category:Antihistamines|Antihistamine]] (1) · [[:Category:Antihyperglycemic_agents|Antihyperglycemic agent]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist (second-generation)]] (1) · [[:Category:Insulin_secretagogues|Insulin secretagogue]] (1) · [[:Category:Nitrofurans|Nitrofuran]] (1) · [[:Category:Sulfonylureas|Sulfonylurea (third-generation)]] (1) · [[:Category:Urinary_anti-infectives|Urinary anti-infective]] (1)

None (2) · '"`UNIQ--vote-00000CC9-QINU`"' Mostly excreted unchanged in feces and urine; P-glycoprotein substrate (the basis of the fruit-juice interaction). (1)

'"`UNIQ--vote-00000491-QINU`"' (1) · '"`UNIQ--vote-000008A1-QINU`"', '"`UNIQ--vote-000008A2-QINU`"' (1) · '"`UNIQ--vote-00000CCA-QINU`"', '"`UNIQ--vote-00000CCB-QINU`"' (1)

1-2 mg PO once daily with breakfast; titrate by glycemic response (1) · 100 mg PO BID × 5 days (Macrobid) for cystitis; 50-100 mg HS for chronic prophylaxis (1) · 60 mg PO BID or 180 mg PO once daily (1)

1 mg, 2 mg, 4 mg tablets (1) · 25 mg/5 mL suspension; 25, 50, 100 mg capsules (Macrodantin); 100 mg Macrobid capsule (1) · 30, 60, 180 mg tablets; 30 mg ODT; 6 mg/mL oral suspension; all OTC (1)

180 mg/d (adults) (1) · 400 mg/d (rarely used) (1) · 8 mg/d (1)

None · Oral · IV · Topical · IM · intranasal · rectal · Subcutaneous · topical ophthalmic · ophthalmic · intramuscular · intravenous · transdermal · vaginal · Subcutaneous (abdomen · sublingual · thigh · inhaled · SC · intra-articular

Other values:

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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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12 hours (Macrobid) (1) · 12-24 hours (1) · 24 hours (1)

~14 hours'"`UNIQ--ref-00000CCC-QINU`"' (1) · ~20-60 minutes (plasma; not the relevant kinetic since urinary concentration matters)'"`UNIQ--ref-000008A3-QINU`"' (1) · ~5-9 hours (parent and active metabolites combined)'"`UNIQ--ref-00000492-QINU`"' (1)

~100% (oral; not significantly affected by food)'"`UNIQ--ref-00000493-QINU`"' (1) · ~33% (oral; fruit juices including grapefruit, orange, and apple reduce absorption substantially via OATP1A2 inhibition — distinctive interaction not seen with most other H1s)'"`UNIQ--ref-00000CCD-QINU`"' (1) · ~90% (oral; food increases absorption)'"`UNIQ--ref-000008A4-QINU`"' (1)

'''Avoid at term (38-42 weeks) and during labor''' (risk of neonatal hemolytic anemia, especially with G6PD deficiency); generally safe in earlier pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Avoid; switch to insulin. Neonatal hypoglycemia reported.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Generally considered safe; loratadine and cetirizine have more pregnancy data and are typically preferred.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

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