Cats can ingest catnip and it may even be helpful for their digestive tract. Some of the most common side effects include vomiting diarrhea and experiencing an upset stomach. Many cats are certainly very attracted to catnip and will actively seek it out in their environment.
Therefore if your cat consumes too much of it they could have an upset stomach. Many cats are certainly very attracted to catnip and will actively seek it out in their environment. Am J Vet Res. Another major pro is that catnip is tried and tested and is absolutely safe to use.