I know you likely are asking Doc, but my research has shown them to be different enough that I am giving away my cat mint – since I meant to plant catnip, and the person I got the plants from did as so many do and tangled them all up together with names and properties.  So I am taking them out, and planting peppermint  and skullcap instead since they have such great properties.  Hopefully Doc can weigh in on this, but I hope this helps you a little (and I hope that my research was correct)!
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