After experiencing a horrible cough with sinus drainage for almost five month while taking 5 mg of Lisinopril I stopped the medicine and after a few days the cough almost disappeared. It has been a week now and I only cough short coughs a few times a day. I can FINALLY sleep and go out in public now without hacking all night and day. I was beginning to think that I should wear a bag over my head the cough was so embarrassing. Good luck to all of you who are experiencing side effects.