Drilldown: Medicines

Azithromycin (1) · Fluconazole (1) · Niacin (nicotinic acid, vitamin B3) (1)

Diflucan (1) · Niaspan (ER, Rx), Niacor (IR, Rx); huge OTC presence (1) · Zithromax, Z-Pak, Zmax (1)

[[:Category:Antifungals|Antifungal (triazole)]] (1) · [[:Category:Azalides|Azalide]] (1) · [[:Category:B-vitamins|B-vitamin]] (1) · [[:Category:Lipid-lowering_agents|Lipid-lowering agent]] (1) · [[:Category:Macrolide_antibiotics|Macrolide antibiotic]] (1) · [[:Category:Triazoles|Triazole]] (1) · [[:Category:Vitamins|Vitamin]] (1)

None (3)

'"`UNIQ--vote-000003F6-QINU`"', '"`UNIQ--vote-000003F7-QINU`"', '"`UNIQ--vote-000003F8-QINU`"', '"`UNIQ--vote-000003F9-QINU`"', '"`UNIQ--vote-000003FA-QINU`"', '"`UNIQ--vote-000003FB-QINU`"' (1) · '"`UNIQ--vote-00000A42-QINU`"', '"`UNIQ--vote-00000A43-QINU`"', '"`UNIQ--vote-00000A44-QINU`"', '"`UNIQ--vote-00000A45-QINU`"', '"`UNIQ--vote-00000A46-QINU`"' (1) · '"`UNIQ--vote-00001035-QINU`"', '"`UNIQ--vote-00001036-QINU`"', '"`UNIQ--vote-00001037-QINU`"' (1)

500 mg PO day 1, then 250 mg PO daily days 2-5 (Z-Pak); 1 g PO single dose for chlamydia; pediatric dosing 10 mg/kg day 1, 5 mg/kg days 2-5 (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) · Vulvovaginal: 150 mg PO single dose; oropharyngeal: 200 mg PO day 1, then 100 mg daily ×14 days; invasive candidiasis: 800 mg load, then 400 mg PO/IV daily; cryptococcal meningitis: 400-800 mg/d (1)

250 mg, 500 mg, 600 mg tablets; 100, 200 mg/5 mL suspension; 2 g ER suspension (Zmax); 500 mg IV (1) · 50, 100, 150, 200 mg tablets; 10, 40 mg/mL oral suspension; 2 mg/mL IV (1) · OTC IR niacin 50-500 mg tablets; Niaspan ER 500, 750, 1000 mg tablets; "no-flush" niacin (inositol hexaniacinate, lacks evidence) (1)

2 g/d (Niaspan); higher off-label use historical (1) · 500 mg/d (typical regimen); single 2 g for Zmax; 2 g for select STIs (1) · 800 mg/d (severe invasive disease) (1)

IV (2) · 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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24 hours (2) · Tissue half-life supports once-daily and post-treatment effect (1)

~1 hour (IR niacin); ER formulations extend functional duration'"`UNIQ--ref-00001038-QINU`"' (1) · ~30 hours (long, supports once-daily dosing and substantial drug-interaction window after discontinuation)'"`UNIQ--ref-00000A47-QINU`"' (1) · ~68 hours (terminal; reflects deep tissue accumulation, much longer than plasma)'"`UNIQ--ref-000003FC-QINU`"' (1)

>90% (oral; not affected by food or gastric pH — a major practical advantage over itraconazole)'"`UNIQ--ref-00000A48-QINU`"' (1) · High (oral; food enhances)'"`UNIQ--ref-00001039-QINU`"' (1) · ~37% (oral; food reduces absorption modestly)'"`UNIQ--ref-000003FD-QINU`"' (1)

None (1) · Generally considered safe; commonly used in pregnancy when macrolide indicated.<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) · [[USLegal:Prescription only|Rx-only]] in US (2)