How old is gramps? I wish he makes a full recovery and the medication does its job. Putting Gramps on a 24 our water fast if he is not eating is the best to flush out all toxins and will also help with a faster recovery. Also a warm homemade chicken broth soup with tons of veggies. Our Mimi passed a year and a half ago. She was never sick. My daughter awoke me in the middle of the night, I went downstairs and our Mimi was having a heard time breathing so off to emergency vets we went, exrays, water around heart and lungs, pills to flush all water from around her heart and was on constant oxygen. She just left us after 10 hours being on oxygen trying to figure out the best long term treatment. She had sudden heart failure. GONE! JUST LEFT SO FAST WE DID NOT SEE IT COMING!