Drilldown: Medicines

None · Codeine · 1,4-Butanediol · 1B-LSD · 1cP-LSD · 1P-LSD · 1V-LSD · 2-AI · 2-FA · 2-FDCK · 2-FMA · 25B-NBOH · 25B-NBOMe · 25C-NBOH · 25C-NBOMe · 25I-NBOH · 25I-NBOMe · 25N-NBOMe · 2C-B · 2C-B-FLY

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None (2) · (multiple, generic dominant) (1) · Valtrex (1)

Analgesic (2) · Classic Psychedelic (1) · Opioid (2) · Phenethylamine (1) · Prodrug (1) · Research material (1) · [[:Category:Anti-herpesvirus_agents|Anti-herpesvirus agent]] (1) · [[:Category:Antivirals|Antiviral]] (1) · [[:Category:Nucleoside_analogs|Nucleoside analog (prodrug)]] (1)

Extremely potent 5-HT2A agonist; vasoconstrictor (1) · Mu-opioid receptor agonist; prodrug (metabolized to morphine) (1) · Prodrug; converted to [[Morphine|morphine]] by [[Enzyme:CYP2D6|CYP2D6]] for analgesic action. (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)

None (2) · Mild to moderate pain; cough suppression (low-dose). (1) · '"`UNIQ--vote-000005D2-QINU`"', '"`UNIQ--vote-000005D3-QINU`"', '"`UNIQ--vote-000005D4-QINU`"', '"`UNIQ--vote-000005D5-QINU`"' (1)

None (2) · Adult: 15–60 mg every 4 hours as needed. (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)

None (2) · 500 mg, 1 g tablets (1) · Tablet (15, 30, 60 mg); oral solution; combination products (with [[Acetaminophen|acetaminophen]] or ibuprofen). (1)

None (2) · 3 g/d (zoster) (1) · 360 mg/day (1)

None (2) · Oral (1) · PO (only formulation marketed in the US). (1)

None (2) · 30–60 min (PO) (1) · Symptom relief within 24-48 hours (1)

None (2) · 4–6 hours (1) · 8 hours per dose (1)

None (2) · 2.5–3 hours (1) · ~3 hours (acyclovir, the active metabolite); longer in renal impairment'"`UNIQ--ref-000005D6-QINU`"' (1)

None (2) · ~50% (variable, CYP2D6-dependent for analgesic effect). (1) · ~55% bioavailability of acyclovir after valacyclovir oral (vs ~20% from oral acyclovir directly)'"`UNIQ--ref-000005D7-QINU`"' (1)

None (2) · Avoid; risk of neonatal opioid withdrawal with chronic use; UM-mother breastfeeding contraindicated. (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)

None (2) · US Schedule II (single-entity); Schedule III–V (combination products by content). (1) · [[USLegal:Prescription only|Rx-only]] in US (1)