Thanks for the additional information.

Sorry to hear that he is not feeling well. Based on what you are describing here are some of the more common disorders that could be causing his symptoms:

- Kidney disease
- Liver/gall bladder disease
- Diabetes
- A high calcium level in his blood which can be due to a parathyroid gland tumor or unfortunately cancer
- Addison's disease which is a low cortisone level in a dog's body
- an infection due to tick borne disease or another bacterial infection
- Cushing's disease which is too much cortisone hormone in his body

At this time if the antibiotics are not helping then I would suggest considering having a blood test performed by your vet to look for some of these other diseases. If your vet has not checked a urine sample I would also recommend having this looked at to help determine the problem. The antibiotics should help with an urinary bladder infection therefore I doubt this is all that he has at this time.

Treatment for the above disease will depend on which disease he has. At this time unfortunately there is not much you can do at home to correct his problems. I would not hold him off of water though as he may not be able to control his urine output and could get very dehydrated.

You can try some different foods with him tonight before you are able to talk to your vet again. Some suggestions are a scrambled egg, cottage cheese, cooked pasta, or even some boiled ground beef and rice.

Overall I would talk to your vet about having some blood work checked on him.

Hope this helps -please reply if you have any questions.