I know this has been mentioned before, didn't find it on a quick search.

Lady's Human also belongs to two kitties (besides goofy Lady-girl). He hasn't been online much as they are in the process of moving 300 miles west. (Upstate NY). What can he (over the counter) give two cats to help them relax during the journey? One in particular completely freaks out at any car ride at all, so they don't want this to be 5 hours of complete torture for the poor things.

He talked to the vet, and the vet's office refused to give him anything, as they have not seen the cats in 6 months. They wanted to schedule a general check-up in a couple weeks - but the moving company is there packing the trucks today!