My brother bought this black lab pup from a byb. Apparently it has all its shots. It was on some crap food that the breeder was feeding the dogs. I convinced them to get it on a better food. They are feeding it Taste of the Wild and all was going well. Normal poops n whatnot. Then comes the flea infestation. My sis n law, bombed the house and put advantage on the dog and cat. The pup started with the diarrhea and said it was just separation anxiety. A couple weeks later she notices worms in the poo and has me bring her to the vet monday. The poo sample she left me was kept in a baggy on the porch for 2 days so when i got there they threw that away without looking at it. My sis n law called them with the dogs shot records and told the tech that the worms were small. So they assumed it was tapeworms and gave the dog a oral paste, a shot, and sent home a pill. Today the dog still has diarrhea, they called the same vet and they told my brother to give the pup peptobismol and if the diarrhea continues then to put the dog on turkey burger and rice and that its probably an allergy to the kibble. Note- I hate this vet, he always treated me like i was an imbecile. He never tells you what he is administering and always blames everything on the animals home care. Any advice about what to do about the diarrhea? I was thinking of some bene-bac but i don't know.