We use this for our CRF cat for potassium deficiency. It doesn't upset his stomach like the powdered potassium citrate supplement we tried prior to Renal K+ and we like that. As the reviewer before me noted, it has a very strong, sweet maple smell which is created with artificial flavoring and aspartame, which is not our favorite thing about this product. For an animal with compromised renal function, it does not makes sense to us to have unneccessary and potentially harmful ingredients added, all to create a syrupy essense we presume is designed more to appeal to human noses than our kitty's taste buds. Still, he tolerates this product better than any other we've tried and it DOES soothe the muscle spasms and twitches that he was having prior to potassium supplementation. Of course, we do feel compelled to note that it's a good idea to do your research when supplementing CRF cats (with potassium and anything else you might be considering implementing) & even though potassium gluconate currently works for our kitty, we would encourage you to consult blood test results with your vet when deciding between gluconate and citrate, because as we understand it, gluconate is not *always* the most suitable option of the two.