Normal diastolic pressure symptoms and conditions

I have had the same serious of same side effects as everyone listed in this site. Tiredness is the BIG one - Mostly to not being able to sleep...Timing is perfect with taking this Drug. i necver had this problem before. I feel great in the morning untill about and hour later after popping the pill and the rest of the day is a struggle. Doc' put me on Provigil (speed) to keep me going. Some days that doesn't even work. it's only been lately i have put two and two together and blame it on the Lisinopril.

Question? Anyone switch Med's and had beter results? If so which one??
Thanks
Rich