BTW: I had several water dishes available too.
The dog in question never goes near them. But, pouring water over his food works, he has to drink it to get to the food. It has made a BIG difference. No recurrences in 4 years.
Frequent bathroom breaks, also.
If the dog’s condition is serious, there are prescription meds that might be helpful. I wouldn’t bother with any supplements, unless the veterinarian treating your dog advises differently.
Consider seeing a Veterinary Internal Specialist, if you are not seeing results with the current treatment.
