Glad the trip worked out well! I am always leary of buying over the counter meds... unlike human meds, there is not much regulation on it so you don't know if what they put in it or if it is good or bad for them. We use a secured crate for long trips ( the 3 Yorkies really seem to like snuggling up and sleeping together). For shorter trips, we like our Snoozer carseats. They are awesome and allow the dogs to see out AND they are secured with a tether that clips to the harness..... a harness MUST be used. Collars could be dangerous.
Also we have found that a little drop of lavender oil (the good stuff .. 100% from GNC) rubbed on the tips of their ears is also very calming. The physical therapist that worked with Shelby used it and it was WONDERFUL! ... and the added bonus is that you get a hint of lavender smell while driving, too!