I took Diovan HCT for years without any side effects. We must do mail order with our health insurance and the providers website said that Lisinopril was an alternative to the Diovan that was available as a generic and therefore a lower cost. I spoke with my Dr. about it and she advised me of the "cough" and said it wasn't exactly the same but since I wanted to save as much money on scripts as I could I tried the Lisinopril. I took it for a couple of months and noticed being more fatigued and weak. Finally I got to the point where I was feeling like I was hungover 24x7 and started looking to see if there was any side effects from this different med I was taking and saw all the symptoms I was having from fatigue to palpitations to nausea to muscle weakness and cough. I went back to the Dr. and got back on Diovan and everything is much better now. My wife was on this medicine too for a while and she noticed the same thing but didn't put it together with the medicine. There should be some kind of advisory with this stuff or it should be taken off the market.