Has anyone gotten brain zaps when they've gone to a higher dose? I did 5mg Lexapro for 3 weeks, then 10 days at 10mg, 4 days at 15mg and today I went to 20mg of Lexapro, per doctors instructions. When I started and at the other dose changes I just had headaches and felt dizzy till I adjusted. I have, on occasion, had brain zaps. But today it's been going on all day.