Catnip (Nepeta cataria) is classified as a calming, carminative (aids digestion), mild sedative, and antispasmodic herb. It is commonly used to relieve stress, anxiety, and insomnia, promoting relaxation and restful sleep. Catnip is also used to soothe digestive issues like gas, bloating, and indigestion. While it has a well-known effect on cats, it is often used by humans for its mild sedative and digestive benefits.