Please research alternative treatments. Natural remedies that work with the body to strengthen it are not man made chemicals that the kidneys have to struggle to filter. There are natural remedies that have been shown to help tonify and cleanse the blood, taking work load off of kidneys and also supplements from Traditional Chinese Medicine that are not allowed to state what they may be capable of because they are not FDA approved. That is how I am treating my dog, with excellent results.
The SubQ fluids work very well. Don't give up. You should also research natural remedies...I have had amazing results with herbal supplements.
O order green tripe from a company called Hare Today Gone Tomorrow, but they have dog food with tripe in it at Petco. Solid Gold has some, but my dogs wouldn't eat it. It's hard to get Chloe to eat.