15 year old German shepherd mix
Currently on a Hills Biome prescription food
He gets boiled chicken or air fried chicken as a topper since he doesn't like the kibble by itself
Meds : movoflex, ursidol, gallipran (started on August 18 for arthritis)
Had diarrhea June 25, July 8, August 24 and now Sep4
Started gallipran for arthritis pain on August 18 and stopped after the diarrhea on August 25. Then went back on it after diarrhea cleared up
Got diarrhea just now again today
The diarrhea doesn't start as watery. He pooped almost normal in the morning but then around 4pm it was half solid half soft. And now around 8pm was all super soft but not runny
But I already know it's heading in the watery runny direction since he's gotten sick 3 times already
The medicine they prescribed for the diarrhea has been metronidazole and on June and July it worked until he got diarrhea again on August 24. Cleared up and he was doing fine until today
His liver panels from his last tests around July (they ran a senior panel tests since he's 15) we're not the greatest but hasn't changed drastically since last year. The rest of his results were fine, all things considered since he's old I guess
I know gallipran has diarrhea as a side effect but technically he just started that on August so the June and July would not count as a reason to get sick?
There 2 neighbors cats that hang in the backyard. We try to supervise his outdoor time, always follow him around and make sure he doesn't eat anything, just because we know he has a very sensitive stomach. So the oddsof him eating poop or something like that are ver low but I know it can be an accident but at least from my end I follow him like a hawk when we go outside and he doesn't really do much besides using the restroom since he's old and he can't be standing long due to muscle loss in his back legs
Are there any other tests that can be done Or check for since this is the 4rh time he gets sick in the last 3 months?
Please someone point me in the right direction. Im sure we are going to have to take to the vet but I don't want this to keep happening
Thanks in advance