Drilldown: Medicines

Dexmethylphenidate (1) · Olopatadine (1) · Sildenafil (1)

Focalin, Focalin XR (1) · Patanol, Pataday (ophthalmic, now OTC), Patanase (intranasal) (1) · Viagra, Revatio (1)

CNS stimulant (1) · NDRI (1) · PDE5 Inhibitor (1) · Psychostimulant (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist]] (1) · [[:Category:Mast_cell_stabilizers|Mast cell stabilizer]] (1) · [[:Category:Ophthalmic_antihistamines|Ophthalmic antihistamine]] (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-000011D5-QINU`"' Minimal systemic absorption and the dual mechanism underlie its first-line role in seasonal allergic conjunctivitis. Comfort drops without preservatives are available for sensitive patients'"`UNIQ--ref-000011D6-QINU`"'. (1)

'"`UNIQ--vote-00000150-QINU`"', '"`UNIQ--vote-00000151-QINU`"' (1) · '"`UNIQ--vote-00000705-QINU`"', '"`UNIQ--vote-00000706-QINU`"' (1) · '"`UNIQ--vote-000011D7-QINU`"', '"`UNIQ--vote-000011D8-QINU`"' (1)

None (1) · 50 mg ~1 h before sexual activity (ED); 20 mg TID (PAH) (1) · Ophthalmic Pataday 0.7%: 1 drop in each eye once daily (24-hour formulation); Patanol 0.1% BID; intranasal Patanase 2 sprays/nostril BID (1)

None (1) · 0.1% (Patanol), 0.2% (Pataday once-daily original), 0.7% (Pataday 24-hour) ophthalmic solutions; 0.6% nasal spray (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) · Once daily (Pataday 0.7%); BID (other ophthalmic) (1)

intranasal (1) · IV (Revatio) (1) · Oral (2) · Topical ophthalmic (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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24 hours (0.7% formulation); 8-12 hours (lower-strength) (1) · IR 4–6 h; XR 8–12 h (1) · ~4 h (1)

2.2 h (IR parent); ~3 h (XR parent) (1) · ~3 hours (systemic, when measurable; topical action dominates)'"`UNIQ--ref-000011D9-QINU`"' (1) · ~4 h (1)

Topical with minimal systemic absorption'"`UNIQ--ref-000011DA-QINU`"' (1) · ~22–25% (1) · ~40% (1)

Category B (1) · Category C (1) · Generally considered safe; minimal systemic exposure.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC (Pataday ophthalmic) and [[USLegal:Prescription only|Rx-only]] (Patanase intranasal) in US (1) · Rx-only in US (1) · Schedule II (1)