Meridia symptoms and conditions

I am a 49 year old female who started on 10 gm Lisinopril 2 weeks ago for high blood pressure. I've had a couple instances of light-headedness and headaches, nothing serious, but I have developed a real bad dry cough that I can't control. Sometimes it's bad enough I gag and almost vomit, and am loud enough I can be heard all through the office - very embarrassing. I've gotten up in the middle of the night to leave the bedroom so I won't disturb my husband. Other than the cough I have no complaints and actually feel better now than I did before I started. I read somewhere that iron supplements help the cough and I have started taking these to see if it's true; so far I think the cough is not as bad but still as frequent. It's only been a couple of weeks so I want to keep going for a few weeks longer to see if things get better or worse.