Really tired and not depressed as i have been on lexapro (escitalopram) for a year (anxiety). slept 15 hours last night and can't keep my eyes open today. any ideas?

See your doctor: It is time for you to talk to the doctor who is prescribing the lexapro (escitalopram). Hyper somnolence can be a product of depression but you need to consider whether it may be due to a medical condition as well. Rule out physiological concerns (thyroid, sleep apnea) then address whether or not the depression is returning. Are you in therapy in addition to the medication?