One of my donkeys has come down with what we suspect is EPM. EPM is equine protozoal myeloencephalitis, a protozoal infection. He is unsteady on his hind legs and ambles around like a drunken sailor. The symptoms are definitely neurological. We are treating him with ReBalance and vitamin E. EPM is transmitted through grass or hay that is contaminated with 'possum fecal matter. Has anyone had experience with this? What was the outcome? Also, I was instructed by the vet to also give him 5,000 international units of vitamin E daily. No one seems to be able to tell me how that measures out in any volume measurable way such as tablespoons. I have been giving him 2 of the plastic measuring scoops that comes with MSM, somewhat like a coffee measure. But I'm not sure if that is correct. Any help on that?