Alright here goes. Im 25 y/o male have had high blood pressure since I was about 15. Last week my doctor took me off Norvasc and put me on 20mg Lisinopril. I have been taking this drug for only 4 days and am experiencing extreme fatigue, muscle aches, insomnia. I am so tired but I cant sleep. The pain in my legs is terrible when I lay down. I feel like a zombie. I just called my doctor and am waiting for a response from him. I don't want to believe it is the lisinopril causing this but what else could it be. I feel like i am dying............