I have been taking Lexapro for about 3 years for GAD and panic disorder. I dont quite remember if I got any symptoms when i first started on the meds (3 years ago). I have been taking 10mgs since i started. 5 days ago my doctor increased me to 20mgs.

I am not on any other medication, and for the most part the lexapro has been working well for me except recently, which is the reason for the increase dose.
My question is; has anyone experienced any side effects from increase increase dosage of lexapro? If so, did the side effects go away and how long after the dosage increase?

I am getting very lethargic. Tired most of the day. Sleeping like 10 hours a night.

Thank you for your help.