Drilldown: Medicines

Dexmethylphenidate (1) · Nifedipine (1) · Sildenafil (1)

Focalin, Focalin XR (1) · Procardia, Procardia XL, Adalat CC, Afeditab CR (1) · Viagra, Revatio (1)

CNS stimulant (1) · NDRI (1) · PDE5 Inhibitor (1) · Psychostimulant (1) · [[:Category:Antianginals|Antianginal]] (1) · [[:Category:Antihypertensives|Antihypertensive]] (1) · [[:Category:Calcium_channel_blockers|Calcium channel blocker (dihydropyridine)]] (1) · [[:Category:Tocolytics|Tocolytic (off-label)]] (1)

None (1) · 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-00000150-QINU`"', '"`UNIQ--vote-00000151-QINU`"' (1) · '"`UNIQ--vote-00000705-QINU`"', '"`UNIQ--vote-00000706-QINU`"' (1) · '"`UNIQ--vote-00000747-QINU`"', '"`UNIQ--vote-00000748-QINU`"', '"`UNIQ--vote-00000749-QINU`"', '"`UNIQ--vote-0000074A-QINU`"', '"`UNIQ--vote-0000074B-QINU`"', '"`UNIQ--vote-0000074C-QINU`"' (1)

None (1) · 50 mg ~1 h before sexual activity (ED); 20 mg TID (PAH) (1) · ER 30-60 mg PO once daily; immediate-release 10 mg PO TID (now rarely used for hypertension due to reflex tachycardia) (1)

None (1) · 10, 20 mg IR capsules; 30, 60, 90 mg ER tablets (1) · 25, 50, 100 mg tabs (Viagra); 20 mg tabs and 10 mg/mL oral suspension (Revatio) (1)

None (1) · 100 mg/d (ED); 20 mg TID (PAH) (1) · 120 mg/d (ER); IR not for chronic hypertension (1)

IV (Revatio) (1) · MI reports) (1) · Oral (2) · Oral; sublingual IR is discouraged (uncontrolled BP drops (1)

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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IR 4-8 hours; ER 24 hours (1) · IR 4–6 h; XR 8–12 h (1) · ~4 h (1)

2-5 hours (IR); ER formulations extend functional duration via osmotic/matrix release'"`UNIQ--ref-0000074D-QINU`"' (1) · 2.2 h (IR parent); ~3 h (XR parent) (1) · ~4 h (1)

~22–25% (1) · ~40% (1) · ~50% IR (extensive first-pass via CYP3A4); ER products release-rate-limited'"`UNIQ--ref-0000074E-QINU`"' (1)

Category B (1) · Category C (1) · Oral nifedipine is one of the preferred agents for severe hypertension in pregnancy and for tocolysis in preterm labor.<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 (1)