Drilldown: Medicines

Benzonatate (1) · Cefdinir (1) · Valacyclovir (1)

Omnicef (discontinued in US under brand); mostly generic (1) · Tessalon, Zonatuss (1) · Valtrex (1)

[[:Category:Anti-herpesvirus_agents|Anti-herpesvirus agent]] (1) · [[:Category:Antitussives|Antitussive]] (1) · [[:Category:Antivirals|Antiviral]] (1) · [[:Category:Beta-lactam_antibiotics|β-lactam antibiotic]] (1) · [[:Category:Cephalosporins|Cephalosporin (third-generation)]] (1) · [[:Category:Nucleoside_analogs|Nucleoside analog (prodrug)]] (1)

None (1) · '"`UNIQ--vote-00000015-QINU`"' Pediatric ingestion (capsule chewed or punctured) releases the free local anesthetic and causes seizures, cardiac arrhythmia, and death'"`UNIQ--ref-00000016-QINU`"'. (1) · '"`UNIQ--vote-000005D0-QINU`"' Selectivity comes from the viral-kinase-only initial phosphorylation step, which is why uninfected cells generate minimal active drug'"`UNIQ--ref-000005D1-QINU`"'. Dose-adjust by renal function; rare crystalline nephropathy with rapid IV acyclovir. (1)

'"`UNIQ--vote-00000017-QINU`"' (1) · '"`UNIQ--vote-000005D2-QINU`"', '"`UNIQ--vote-000005D3-QINU`"', '"`UNIQ--vote-000005D4-QINU`"', '"`UNIQ--vote-000005D5-QINU`"' (1) · '"`UNIQ--vote-000009DF-QINU`"', '"`UNIQ--vote-000009E0-QINU`"', '"`UNIQ--vote-000009E1-QINU`"', '"`UNIQ--vote-000009E2-QINU`"', '"`UNIQ--vote-000009E3-QINU`"' (1)

100-200 mg PO TID (max 600 mg/d) (1) · 300 mg PO BID, or 600 mg PO once daily, ×5-10 days; pediatric 14 mg/kg/d (1) · Initial genital herpes 1 g PO BID × 10 days; recurrent 500 mg BID × 3 days; suppression 500 mg-1 g PO daily; zoster 1 g TID × 7 days (1)

100, 150, 200 mg liquid-filled capsules ("perles") (1) · 300 mg capsules; 125, 250 mg/5 mL suspension (1) · 500 mg, 1 g tablets (1)

None · Indication-specific · 40 mg/d · 10 mg/d · 20 mg/d · 80 mg/d · 10 mg/d (adults) · 100 mg/d · 4 g/d · 400 mg/d · 40 mg/d typical; up to 240 mg/d for Zollinger-Ellison · 5 mg/d · 50 mg/d · 600 mg/d · No fixed ceiling; titrate to clinical effect and tolerability with CDC opioid prescribing guidance constraints on morphine-milligram-equivalent (MME) totals · No fixed maximum; titrated to TSH target · TID per eye · Titrated to glucose; no fixed ceiling · Titrated to glucose; no fixed maximum · '''20 mg/day in adults >60 years''' per FDA's 2011-2012 QT-prolongation warning; 40 mg/day in adults ≤60

Other values:

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Oral (2) · Oral (swallow whole) (1)

15-20 minutes (1) · Hours (1) · Symptom relief within 24-48 hours (1)

12-24 hours (1) · 3-8 hours (1) · 8 hours per dose (1)

Not well characterized'"`UNIQ--ref-00000018-QINU`"' (1) · ~1.7 hours'"`UNIQ--ref-000009E4-QINU`"' (1) · ~3 hours (acyclovir, the active metabolite); longer in renal impairment'"`UNIQ--ref-000005D6-QINU`"' (1)

16-21% capsule, 25% suspension (oral; iron and antacids reduce absorption substantially)'"`UNIQ--ref-000009E5-QINU`"' (1) · Not well characterized'"`UNIQ--ref-00000019-QINU`"' (1) · ~55% bioavailability of acyclovir after valacyclovir oral (vs ~20% from oral acyclovir directly)'"`UNIQ--ref-000005D7-QINU`"' (1)

Generally considered safe in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited human data; animal reproductive studies not conducted<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Widely used in pregnancy when antiviral indicated; reassuring registry data.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

[[USLegal:Prescription only|Rx-only]] in US (3)