Thought of something else... the Vet said to try one tablet before we traveled. So a few days before, I gave him one. Worked fine... he slept for several hours, BUT remember he was "in his normal environment" and comfortable. Once you start moving them, they get stressed and the adrenaline level goes up... effects may not be the same. I'm sure it was better with than wo it, but it wasn't 100% effective.

Best of Luck for you an kitty !

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David (OFI)