Not only is catnip not harmful to dogs, but most canines like it because it provides a number of benefits. Catnip contains minerals that are good for dogs, as well as essential oils that contribute to a healthy digestive system.
While catnip acts as a stimulant for cats, it works in the opposite way for dogs, and it is occasionally used as a sedative for them. Catnip is also used to treat intestinal and stomach ailments that sometimes afflict dogs. It's good for relieving gas, and its antispasmodic properties help alleviate cramps and diarrhea. In addition, catnip contains a compound that can be an effective antiseptic when applied to a dog's cuts and scratches.