I started taking Klonopin and Lexapro a couple of months ago. I no longer want to be on the Lexapro but would like to continue with the Klonopin. I started weening my self off the Lexapro only taking half. Yesterday and today I did not take any, and was feeling extremely light headed all day. It wasn't until midday today I realized the light headed feeling could be from not taking my medication, so I took a half, and within 30 minutes I wasn't feeling light headed and haven't since. What was causing my light headed feeling?