Canine Meds Please Help -- I Need All Possible Non Prescription Solutions For Chronic, Recurring Canine Diahrrea.?

Please help -- I need all possible non prescription solutions for chronic, recurring canine diahrrea.? - canine meds

I have two Golden Retrievers, 7 a.m. to 9 p.m., the healthy and happy. One is anorexic, but that is not new. Flagyl I keep getting the vet, but I need some natural alternatives. I can not go to the vet for medicines not to do this.