My 97 yr old mother is rapidly becoming mentally disabled. The onset is so rapid I suspect medication (over-the-counter sleep aids in particular). She's been checked for a UTI, negative. She recently had heart failure due to fluid overload and spent 2 nights in the hospital. Since the heart failure episode I've noticed advanced confusion and memory loss. As a lifetime insomniac, she takes sleeping aids nightly. For the longest time I was able to pacifly her with Melatonin. Now I noticed she has slipped an over-the-counter sleep aid into the Melatonin bottle (purchased by her DIL). I have no idea how many pills she takes at night. My question is: can the sleep aids be the culprit, or at least a part of it? Has anyone had any experience with sleeping pills and the elderly?