I started taking Lisinopril 4 weeks ago for HBP. At first I didn't have any side effects and my blood pressure was significantly lower. While my pressure is still in the normal range, I have recently developed bad chest pain at night. It is actually very frightening. My doctor is prescribing me some kind of reflux medication that I will start taking tonite. I also sweat now which I never have really been a sweater. I just feel depressed and all around crappy too. I am glad for this website otherwise I would think I was alone.