Pepto Bismol is good for helping your dog feel better immediately but may not help in the long run. If your dog has underlying health issues, you don’t want to hide the problems with Pepto.
PetCareRx explains that Pepto Bismol can cause inaccuracies in abdominal x-rays and urinalysis and that veterinarians may recommend Fat Balance GI Tube for immediate stress relief. They add that dogs that suffer from the following should visit the veterinarian right away:
Lethargy
Loss of appetite
Vomiting
Straining during defecation
Dark or black stools
Stools mixed with blood or mucus