For the stomach to repair, Aloe Vera juice works great, it easy on the system, works to repair anything internally and is compatible with the digestive and elimination systems.
There is a alternative vet here in Austin, TX I used on one of our German Shepherds that is still practicing nationally. He doesn't have to see your dog I understand as long as he knows the diagnosis. He can suggest natural health remedies to reduce or eliminate some symtoms and improve quality of life if nothing else. If you are interested in further info, he is Will Falconer.You may want to see if there is someone where you are than does the same kind of care. Detoxing the dog is a must if it can be safely done and you have someone that can direct you.
Our dog had kidney failure and cancer. We brought him home, were told the best to expect was 3-5 months. We had him for fourteen great quality months before the kidneys failed for good. I can sympathize with you on what to do, the pharmaceutical stuff can only make the health of a dog or person worse sometimes, worse than the afflication.