Drilldown: Medicines

Fexofenadine (1) · Glimepiride (1) · Niacin (nicotinic acid, vitamin B3) (1)

Allegra, Allegra Allergy 24 Hour, Mucinex Allergy (combo) — all now OTC in US (1) · Amaryl (1) · Niaspan (ER, Rx), Niacor (IR, Rx); huge OTC presence (1)

[[:Category:Antihistamines|Antihistamine]] (1) · [[:Category:Antihyperglycemic_agents|Antihyperglycemic agent]] (1) · [[:Category:B-vitamins|B-vitamin]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist (second-generation)]] (1) · [[:Category:Insulin_secretagogues|Insulin secretagogue]] (1) · [[:Category:Lipid-lowering_agents|Lipid-lowering agent]] (1) · [[:Category:Sulfonylureas|Sulfonylurea (third-generation)]] (1) · [[:Category:Vitamins|Vitamin]] (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-00000CCA-QINU`"', '"`UNIQ--vote-00000CCB-QINU`"' (1) · '"`UNIQ--vote-00001035-QINU`"', '"`UNIQ--vote-00001036-QINU`"', '"`UNIQ--vote-00001037-QINU`"' (1)

1-2 mg PO once daily with breakfast; titrate by glycemic response (1) · 60 mg PO BID or 180 mg PO once daily (1) · Niaspan ER 500 mg PO at bedtime, titrate weekly to 1-2 g/d; flushing-protective aspirin 30-60 minutes before dose; pellagra replacement 100-500 mg/d (1)

1 mg, 2 mg, 4 mg tablets (1) · 30, 60, 180 mg tablets; 30 mg ODT; 6 mg/mL oral suspension; all OTC (1) · OTC IR niacin 50-500 mg tablets; Niaspan ER 500, 750, 1000 mg tablets; "no-flush" niacin (inositol hexaniacinate, lacks evidence) (1)

180 mg/d (adults) (1) · 2 g/d (Niaspan); higher off-label use historical (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:

Search

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:

Search

12-24 hours (1) · 24 hours (2)

~1 hour (IR niacin); ER formulations extend functional duration'"`UNIQ--ref-00001038-QINU`"' (1) · ~14 hours'"`UNIQ--ref-00000CCC-QINU`"' (1) · ~5-9 hours (parent and active metabolites combined)'"`UNIQ--ref-00000492-QINU`"' (1)

High (oral; food enhances)'"`UNIQ--ref-00001039-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)

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) · Pharmacologic doses generally avoided in pregnancy; vitamin doses fine.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC (low-dose, dietary supplement) and [[USLegal:Prescription only|Rx-only]] (Niaspan ER) in US (1) · OTC in US (1) · [[USLegal:Prescription only|Rx-only]] in US (1)