Teratsosiinia saavilla koehenkilöillä hypotensiota ilmeni useammin annosteltaessa vardenafiilia ja teratsosiinia samanaikaisesti kuin annosteltaessa ne yksitellen 6 tunnin aikavälillä. ###>Among subjects treated with terazosin, hypotension was observed more frequently when vardenafil and terazosin were given simultaneously than when the dosing was separated by a time interval of 6 hours.