Catnip is a perennial herb found in Europe, the Middle East, Central Asia, China, New Zealand, and North America.
It's stem and leaves contains an active ingredient nepetalactone that makes a cat "high". However, it is harmless and not addictive.
Catnip can be used for fun and also to help new cats calm down.
It can also be used in pallaitive cases to help sick or dying cats relax or distract them from their discomfort.
Catnip can be added into scratch boads and rest pads.