Lisinopril and phentermine

I got off Diovan because of diminished energy, drowsiness, and all-around lack of ability to focus after several years on it. I didn't realize it was the Diovan until I got off it and got on a weight loss med: Phentermine. I felt like I was 20 again. But that was short-lived of course because you can only take that stuff for 90 days, max. Diovan was bad for me. Then the Doc prescribed Lisinopril and I was on that for a couple of months until a week ago. I'd been suffering with a dry cough for a week when I told the Doc about the side effect and I've been off Lisinopril for 7 days. The cough is still but slowly going away. Bouts of coughing are no longer every hour on the hour but about 2-3 times a day and still all night long. I'm off of any BP meds now and my BP is 150/90, same as it was on both Lisinopril and Diovan. Apparently it takes a while for the Lisinopril coughing spells to go away.