What is Japanese Catnip, Matatabi, Silvervine? Japanese Catnip ( Actinidia Polygama ) is of the same family with Kiwi Fruit! It gives a state of euphoria response in cats, like Nepeta Cataria ( normal catnip Catnip). Is non-toxic and mainly found in Japan and China.
Their leaves and branches are known to be particularly potent in making cats happy!
Don't give them Matatabi - Silver Vine every day, because then the effect will go away.