My husband has been on Lisinopril for three months. Right after h...

My husband has been on Lisinopril for three months. Right after he started to cough. The Doctor treated him with antibiotics for pnumonia, and then broncitis. Then medicated him for acid reflux(thinking that was causing the problem) Still no luck! He then was sent to Ear,Nose,and Throat specialists who treated him for allergies. No luck either. His regular Doctor then thought is might be the Lisinopril!! Well, he has been off this drug for a week and still coughing with nasal drainage etc.and is exhausted all the time. Any Idea how long this will last..and when I will get my fun husband back? At least long enough to get a kiss without a cough!! Thanks for any ideas.