I think I am having a drug interaction with Clonazepam 1 mg and Ketoconazole (ingested 2 tablets @ 200 mg each about 4 hours ago). I am very dizzy. This seems to be my only symptom. I am also on Lexapro, but do't think that there would be an interaction with this drug. I am wondering if this is more serious. I am just extremely dizzy and off balance. I feel like a pressure on my eyes ad like I said considerably dizzy.