[quote/]How much vitamin E daily do you feed? I've heard this from a ton of people, and I know my mare already gets supplements that include vitamin E, but I'm wondering if I should further supplement on top of them? (not to take over the thread, but I have the same issues as the OP and thought it would be a helpful question)
My mare had a vitamin E deficiency (I live in upstate NY), I would recommend getting your horses levels tested before you add supplements, especially if you are giving them selenium too their levels can get too high.
She used to get one tbs a day of vitamin E but she hasnt been on it in over a year since I had her retested and her levels were way above where they needed to be.