Is dramamine (dimenhydrinate) gluten free? and if yes can it be taken with midol?

Most likely, and yes: Dramamine (dimenhydrinate) is most likely gluten-free, as their website lists the ingredients but does not list gluten. It is a chewable tablet, so that means there is no capsule (some people worry about what a capsule might be make of). There shouldn't be any unusual reaction if the two drugs are taken at the same time or if taken at different times.