After side effects from every blood pressure med I have tried I was thrilled to finally feel good after taking Diovan HCT. Then after two months I could not sleep at night. Cardiologist took me off Diovan but said he had never heard of anyone with that symptom. Well after a week of getting off of it I am able to sleep again. Thanks to this website I found out I was not the only one who had sleep problems even though I felt the doctor thought I was some kind of a nut. It is so good to sleep again.........