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) · Nuedexta (1)

None (1) · Amphetamine (1) · Analgesic (2) · Opioid (2) · Prodrug (1) · Research material (1) · Stimulant (1)

Monoamine releasing agent (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-00001580-QINU`"' First FDA-approved treatment for PBA. The 10 mg quinidine daily dose is far below antiarrhythmic levels but sufficient to nearly fully inhibit CYP2D6, the basis of the combination's pharmacokinetic rationale'"`UNIQ--ref-00001581-QINU`"'. (1)

None (2) · Mild to moderate pain; cough suppression (low-dose). (1) · '"`UNIQ--vote-00001582-QINU`"' (1)

None (2) · 1 capsule (20/10 mg dextromethorphan/quinidine) PO once daily × 7 days, then 1 capsule BID (1) · Adult: 15–60 mg every 4 hours as needed. (1)

None (2) · 20 mg dextromethorphan HBr / 10 mg quinidine sulfate capsules (1) · Tablet (15, 30, 60 mg); oral solution; combination products (with [[Acetaminophen|acetaminophen]] or ibuprofen). (1)

None (2) · 1 capsule BID (40 mg DXM / 20 mg quinidine per day) (1) · 360 mg/day (1)

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

None (2) · 30–60 min (PO) (1) · PBA episode reduction within 1-2 weeks (1)

None (2) · 12 hours (1) · 4–6 hours (1)

None (2) · 2.5–3 hours (1) · Dextromethorphan substantially prolonged by quinidine's CYP2D6 inhibition (typical extensive metabolizers see ~10× higher AUC); quinidine ~6-8 hours'"`UNIQ--ref-00001583-QINU`"' (1)

None (2) · Increased substantially via CYP2D6 inhibition'"`UNIQ--ref-00001584-QINU`"' (1) · ~50% (variable, CYP2D6-dependent for analgesic effect). (1)

None (2) · Avoid; risk of neonatal opioid withdrawal with chronic use; UM-mother breastfeeding contraindicated. (1) · Limited data; quinidine has been used in pregnancy as antiarrhythmic.<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. Caution with QT-prolonging medicines (quinidine itself is class IA antiarrhythmic, and the dose here, though sub-antiarrhythmic, still contributes to QT)'"`UNIQ--ref-00001585-QINU`"' (1)