They are very beautiful and mysterious creatures but enjoy them at a distance. Do I need to leave out fresh water for my cat when I go away. Its a good idea to always provide fresh water for your kitty. I would look up the ingredients of the medicine and ask your veterinarian about them. Just because something is herbal doesn't mean that it isn't as powerful as any drug in your parent's cabinet.
Most medicines come from plants anyway.
I don't like to medicate any animal before a trip. If your dog knows the area and if the place allows dogs to run around, I am sure your dog will find its way back home. I would push you, to walk your dog on a leash though. That way, you get to protect your dog from cars and protect other people who may be very afraid of dogs. Well, unfortunately it happens but the industry is getting better and better about it.