Wake ups symptoms and conditions

Hi All, three weeks after starting Lisinopril 20mg. I started having productive cough at night, after 4 months of this 'only side effect symptom' I went into Doc and got switched to DIOVAN. I used to run 3 miles, but after coughing every night, with wake-ups at 2 hour intervals coughing, I am too bushed to run. Hopefully the new B/P med will work. Never had a cough like this, don't smoke, 49yrs., RN Type-A person. The Lisinopril and HCTZ did work, but not worth the coughing for me.
A little down with sex drive, but mood lighting, candles, and eager partner helped!
(doc also did pulmonary function test, and xray, all normal range)