If oral medications are ineffective or diarrhea is severe, watery stools, tomato-like stools, or severe dehydration occur, you need to take your dog to a pet hospital for treatment.
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What medicine is good for puppies with diarrhea?

If a puppy has diarrhea, it needs to be checked whether it is caused by infectious diseases such as parvovirus. If confirmed, it needs to be hospitalized for treatment. Considering diarrhea caused by bacterial and parasitic infections, antibacterial and anthelmintic treatment is required. For example, quinolones can be used for bacterial enteritis. Considering diarrhea caused by bacterial flora disorder, it is recommended to feed pets probiotics.