high blood pressure
"I was on 10mg of Lisinopril for about a year and a half. Three months ago, one of my docs noticed that my kidney were not filtering well. A look at a year of blood work showed a gradual decline in function. I was sent to a nephrologist, who looked very thoroughly at my meds and history. He told me it was probably the lisinipril. 

Tapering off of the med has caused almost constant premature atrial contractions, which are not life threatening, but sent me to the ER in day 10. 

Ten days off and my kidneys were already functioning better. It's really strange that this happened, given Lisinopril's use in kidney patients. I'm just glad that the problem was caught in time. Keep an eye on your creatinine and eGFR."