I started this drug 2 weeks ago for borderline HBP. My dosage is ...

I started this drug 2 weeks ago for borderline HBP. My dosage is the 10Lisinopril/HCT. 3 days into starting it I started having a bad dry cough, worse at night. This has continued and kept me up for and hour or more, and also get a sore throat from all the coughing. When walking up the slight incline in my backyard, I'm getting short of breath. About 4 to 5 hours into the day after I take this-my brain or thoughts begin to feel cloudy or confusing and I feel very dragged out and no motivation to do anything even though I have tons of stuff to get done. On a couple of my days off--I laid down and went out like a light for an hour. Upon getting out of bed one morning after a week on this I was so dizzy I had to hang onto the wall! The mind cloudiness seems to lessen in the evening. I am a very active 56 yr. old female. Not overweight-live out in the country and was feeling pretty darn healthy before taking this med. Talked to the nurse at the clinic and she said to give it a little while longer for my system to get use to it. Well-after reading posts here I think NO WAY. I cut the pill in half today as I read that it is dangerous to "cold turkey" blood pressure pills...and I have to say I feel MUCH better today and motivated and not dragged out so much. I'm going to see if there is something else that can be prescribed. My BP is down to normal-but that's about the only thing good I can say about this drug so far.