Vardenafil 20 mg forstærkede den hypotentive effekt af sublingual nitroglycerin (0, 4 mg) indtaget 1 og 4 timer efter vardenafil administration hos raske midaldrende forsøgspersoner.
Vardenafil 20 mg potentiated the blood pressure lowering effect of sublingual nitroglycerin (0.4mg) taken 1 and 4 hours after vardenafil administration to healthy middle aged subjects.