Lisinopril and apparent effects

I had been taking lisinopril for a few years with no apparent effects but last summer began waking with extreme fatigue and slight nausea. I also developed spiking blood pressure but that was stopped by adding a beta blocker. I have vivid dreams and often wake feeling worn out from the dreams.The fatigue is severe and accompanied by depression and anxiety. I also wake feeling hot in face and torso and have intolerance for heat.My dose is 40 mg and has controlled my BP until recently when I have had a couple high readings, possibly due to anxiety. I also had a couple of remissions when I felt OK fro a coule weeks, but the symptoms recurred..