I started using the kidney/bladder drops for my 26 year old cat who has borderline kidney disease. She took it on her food with no issues. I was concerned she would not like the taste but it doesn’t seem to bother her. Her labs were rechecked a year later and her numbers looked a little better. Not sure if the supplement did it or just better hydrated because I started feeding her more canned food throughout the day so she got more moisture. Maybe the two did her some good. I have to say she did not like the taste of the joint supplement nor did my other elderly cat. I do need to order more of the kidney supplement.