Drilldown: Medicines

Citalopram (1) · Dexmethylphenidate (1) · Pramipexole (1) · Ropinirole (1) · Sildenafil (1)

Celexa (1) · Focalin, Focalin XR (1) · Mirapex (IR), Mirapex ER (1) · Requip (IR), Requip XL (extended-release) (1) · Viagra, Revatio (1)

CNS stimulant (1) · NDRI (1) · PDE5 Inhibitor (1) · Psychostimulant (1) · [[:Category:Antidepressants|Antidepressant]] (1) · [[:Category:Antiparkinsonians|Antiparkinsonian]] (2) · [[:Category:Dopamine agonists|Dopamine D2/D3 receptor agonist (non-ergot)]] (2) · [[:Category:SSRIs|Selective serotonin reuptake inhibitor (SSRI)]] (1)

None (2) · Norepinephrine–dopamine reuptake inhibition (DAT, NET), d-threo enantiomer of methylphenidate (1) · Selective inhibitor of phosphodiesterase type 5 (PDE5), preventing cGMP breakdown in vascular smooth muscle. In the corpus cavernosum, potentiates the NO/cGMP cascade triggered by sexual stimulation. (1) · '"`UNIQ--vote-0000001D-QINU`"' CYP2C19 + CYP3A4 metabolism, with CPIC PGx guidance: poor CYP2C19 metabolizers have ~3-fold higher exposure and benefit from a lower starting dose; ultrarapid metabolizers may have inadequate response'"`UNIQ--ref-0000001E-QINU`"'. (1)

'"`UNIQ--vote-00000013-QINU`"', '"`UNIQ--vote-00000014-QINU`"' (1) · '"`UNIQ--vote-00000017-QINU`"', '"`UNIQ--vote-00000018-QINU`"', '"`UNIQ--vote-00000019-QINU`"', '"`UNIQ--vote-0000001A-QINU`"' (1) · '"`UNIQ--vote-0000001F-QINU`"', '"`UNIQ--vote-00000020-QINU`"', '"`UNIQ--vote-00000021-QINU`"', '"`UNIQ--vote-00000022-QINU`"', '"`UNIQ--vote-00000023-QINU`"', '"`UNIQ--vote-00000024-QINU`"', '"`UNIQ--vote-00000025-QINU`"' (1) · '"`UNIQ--vote-00000150-QINU`"', '"`UNIQ--vote-00000151-QINU`"' (1) · '"`UNIQ--vote-00000705-QINU`"', '"`UNIQ--vote-00000706-QINU`"' (1)

None (1) · 20 mg PO once daily; titrate to 40 mg/day after 1 week if tolerated. Elderly (>60) and hepatic impairment: 20 mg/day ceiling (1) · 50 mg ~1 h before sexual activity (ED); 20 mg TID (PAH) (1) · Parkinson disease: 0.125 mg PO TID, titrate weekly to maintenance ~1.5 mg TID. Restless legs syndrome: 0.125 mg PO 2-3 hours before bedtime, titrate to 0.5 mg/day if needed (1) · Parkinson disease: 0.25 mg PO TID, titrate weekly. Restless legs syndrome: 0.25 mg PO 1-3 hours before bedtime, titrate to 4 mg/day if needed (1)

None (1) · 25, 50, 100 mg tabs (Viagra); 20 mg tabs and 10 mg/mL oral suspension (Revatio) (1) · IR tablets 0.125, 0.25, 0.5, 0.75, 1, 1.5 mg; ER tablets 0.375, 0.75, 1.5, 2.25, 3, 3.75, 4.5 mg (1) · IR tablets 0.25, 0.5, 1, 2, 3, 4, 5 mg; XL tablets 2, 4, 6, 8, 12 mg (1) · Tablets 10, 20, 40 mg; oral solution 10 mg/5 mL (1)

None (1) · '''20 mg/day in adults >60 years''' per FDA's 2011-2012 QT-prolongation warning; 40 mg/day in adults ≤60 (1) · 100 mg/d (ED); 20 mg TID (PAH) (1) · 24 mg/day (Parkinson disease); 4 mg/day (restless legs syndrome) (1) · 4.5 mg/day (Parkinson disease); 0.5 mg/day (restless legs syndrome) (1)

IV (Revatio) (1) · Oral (5)

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 (once-daily dosing) (1) · IR 4–6 h; XR 8–12 h (1) · TID dosing (IR); once-daily (ER) (1) · TID dosing (IR); once-daily (XL) (1) · ~4 h (1)

2.2 h (IR parent); ~3 h (XR parent) (1) · 8-12 hours (longer in elderly and renal impairment)'"`UNIQ--ref-0000001B-QINU`"' (1) · ~35 hours'"`UNIQ--ref-00000026-QINU`"' (1) · ~4 h (1) · ~6 hours'"`UNIQ--ref-00000015-QINU`"' (1)

>90% (oral)'"`UNIQ--ref-0000001C-QINU`"' (1) · ~22–25% (1) · ~40% (1) · ~55% (oral)'"`UNIQ--ref-00000016-QINU`"' (1) · ~80% (oral)'"`UNIQ--ref-00000027-QINU`"' (1)

Category B (1) · Category C (1) · Limited human data.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Limited human data; rarely indicated in pregnancy given the typical patient population.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Observational signal for persistent pulmonary hypertension of the newborn (small absolute risk) and neonatal adaptation syndrome with third-trimester exposure.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

Rx-only in US (1) · Schedule II (1) · [[USLegal:Prescription only|Rx-only]] in US (2) · [[USLegal:Prescription only|Rx-only]] in US. Carries the antidepressant '''Boxed Warning''' for suicidality in children, adolescents, and young adults'"`UNIQ--ref-00000028-QINU`"' (1)