Hopefully someone will respond who knows more than I.  But it sounds like you need to see a vet for his treatment plan.  Renal failure usually requires blockers, fluids, & med.  If the meds are causing problems, there's a host of other med out there.  Medications is the same as w/people.    Kd is a good food for senior dogs w/kidney disease.  I blend kd w/water for added fluids per my vet.  Your pet needs to be under a vet's care.  And it's good that your doing research.  
Good Luck     |