... inside was Lisinopril pills at 20mg's. I have been feeling really ill and want to know if this is a direct cause of it. I am on Lisinopril 5 mg after a heart attack a year ago, but have been on the Lexapro 20mg's and ativan 1mg for the last few months. So I have been taking way over the dose of Lisinopril recommended by my Dr. Can this be why I am so sick, and I mean so ill that I cannot get out of bed?? Please help. Thank you for your time