In the land down under our vet and riding rules are standard throughout the
country and to my knowledge there is no rule that restricts or direct the
way that Electrolytes are used. As long as the method does not involve use
of swabbable drugs. I personally use Sea Mineral added to the tucker
(food). Most people use powdered electrolyte added to tucker or
insertedorally with a syringe. I have never seen anyone use a stomach pipe
but it is allowed.
If there are diferent rules in USA could you tell me why and if there is
any move for standardisation.