My 84 year old who is in a nursing home was recently prescribed L...

My 84 year old who is in a nursing home was recently prescribed Lisinopril for BP. He is also suffering from high blood pressure, diabetes, Alzheimer, as well as stomach ulcers. He has been severely dehydrated, does not sleep well at night, very fidgety, and has become more confused. He is now close to renal failure and the doctor says it's because of the drug. In many of these comments, I find that the drug is sometimes prescribed for kidney disease. I believe that this drug generic or not should be taken off the market. I feel that doctors are experimenting with some patients just to see what side effects with patients.