It is normal for a cat to have diarrhea but no worms after taking deworming medicine. This is because the deworming medicine will irritate the cat’s gastrointestinal tract and cause diarrhea. At this time, the cat can be given some probiotics to help regulate the intestinal tract. ; If diarrhea occurs for a long time after taking anthelmintics, it is best to send it to the hospital for examination. It is best to deworm your cat on time to avoid being infected with internal parasites, pay attention to its diet, and freeze raw meat for 72 hours before feeding it.