I've been taking 10mg of Lisinopril since 1/06 just before going ...

I've been taking 10mg of Lisinopril since 1/06 just before going to bed. I, too have experienced dizziness and fainting. Many nights when I've awakened to urinate, I've felt like I've been drunk (and I have not had any alcohol). However, last Friday night I woke around 1am extremely dizzy. I fainted after urinating. I've since readjusted my schedule of Lisinopril and am now taking it early in the morning. I'm also taking it with a full glass of water, have STOPPED taking potassium supplements and I am trying to drink more water during the day. I've not had an incident since I've readjusted, but remain concerned about the drug.