I know a lot of meds have some scary side effects. I personally have not been on lexapro but I have had adverse side effects from Seroquel. I know that it is recommended to give 4-6 weeks while waiting for a new medication to have full effects. You did the right thing by speaking to your doc about the side effects. If in 4-6 weeks you are still having these side effects, it might be worth it to talk to you doctor about switching your meds. I hope this helps and best of luck!