Hi, about your dog's kidney failure. I have a 16.5 year old Basenji with kidney failure. I've been keeping her going, happily, for over two years now on two medicines that I get from Amazon. She's 20 lbs. She takes Azodyl , 2 am and 1 pm, emptied out of the caplets that they come in and put in her food. Azodyl has to be refrigerated. She also takes Epakitin powder, 2/3 scoop am and pm in her food. She's been doing great on these.
She started throwing up her dog food so the vet wanted to calm her tummy and protect the lining from losing too much protein or something like that. So, the vet just added Aluminum Hydroxide Gel 320mg/5ml last week. She get 5ml squirted into her grumpy little mouth before each of her meals. It smells minty and I know she hates it. She also takes one 5mg tablet of Enalapril at night wrapped in a Greenies Pill Pocket. She will also start taking Pepcid OTC 1/2 of a 10 mg tablet 2x a day to protect her stomach and intestines from irritation caused by kidney disease.
She's doing amazing, people are shocked when I tell her age, She acts about 5 years old and begs like mad. We call her "the pushy old broad" ;-)
Ask your vet about this stuff. Let me know if there is anything else I can do to help.
Demaris