90% højere plasmakoncentration af sildenafil og den aktive N- desmethylmetabolit, sammenlignet med yngre frivillige forsøgspersoner (18- 45 år).
Healthy elderly volunteers (65 years or over) had a reduced clearance of sildenafil, resulting in approximately 90% higher plasma concentrations of sildenafil and the active N-desmethyl metabolite compared to those seen in healthy younger volunteers (18-45 years).