If you cat has definitely been diagnosed with kidney problems, depending on his BUN and Creatnine levles, you may need to do more. I know what a financial burden it can be as I just spend over $2,700 on my 10 year old cat....he was in pretty bad shape. I can say proudly that he is doing 99% better now, but it was a long and widing path that lead to his recovery: Daily I.v.'s at home, iron, appetite accelerator and kidney medicine. I wish you all the luck in the world. I hope the B12 is enough and I pray for you and a miracle.
