Andy,
I've always had Dobermans which are prone to bloat so I always carry 3 extra stength Gas X tablets. A dog the size of a Dobe would take 2 tabs and I carry an extra in case one were to get spit out. The Gax x won't cure bloat but it will buy you a few extra minutes in getting the dog to a vet. I don't know if your breed is prone to bloat as it strikes larger breeds most of the time, you might check with your vet. I also carry one of the 2 inch rolls of vet wrap which can be found at most feed stores and a small roll of guaze.