I have a cat who, like most other cats, really loves catnip. She becomes (joyfully) delusional and keeps rolling on the ground. Most of the time she would swallow the herb. While I enjoy watching the little show she puts on after catnip consumption, I am a bit worried about the possibility of side effects.
Is there any health benefit associated with consuming catnip? Is there any harm that catnip could potentially do to cats (at some point my cat was so high that I started worrying she could die of heart attack...)? What would be an appropriate amount of consumption? Could the herb be addictive?