This is the basic information on Vit . E recommendations for an IR or PPID horse from the ECIR PDF.
Vitamin E - 1,000 IU/day per 500 lbs body weight (again, human supplement may be easiest, e.g., soft gel caps in oil, added to beet pulp)
For a deep dive into Vit E, this article by Stephanie Valberg, PhD at Michigan State explains the various muscle diseases and her recommendations for Vit E .
Supplementing Horses With Vitamin E – The Horse
And the following reading of Dr. Carrie Finno of UC Davis
Most PPID/IR horses can be given either human gel capsules( any brand that is available at drugstores, Walmart, etc. for humans is fine.) or powdered/liquid vit e from livestock and equine suppliers. Natural vit E has been shown in studies to be more bioavailable, but synthetic Vit E is fine, you just might need to use more of it. If you use powdered Vit E, you need to add a bit of oil to allow the fat soluble Vit E to be absorbed. There is another version of natural vitamin e that is micelled, meaning it is altered to be water soluble and tends to have the most absorption. It is expensive, but all Vit E right now is in the expensive category.
Emcelle® Tocopherol Vitamin E – Custom Equine Nutrition
The powdered Vit E is readily available at livestock supplies or at Uckele.com
Uckele also carries liquid Vit e that doesn't need oil as it is in an oil base
Uckele Liquid E Quart
Dawn Wagstaff and Tipperary
Saline, MI 2003
Jocelyn, can you be more specific about where you are lost?
If you can’t find the Vit E information in the Horsekeeping sub-group, first check whether you have joined the sun-group. The link Cass sent may not work unless you are a member. Information on joining the sub-groups was sent to you in your welcome message here:
Once you have joined the Horsekeeping sub-group, go to the Files section, and scroll through to the end of the Files as they are in alphabetical order and V for Vitamin is at the end.
Canberra, Australia 2010
I give my horse 2 of these per day so that he gets 2,000 IU vitamin E in oil. It's super easy, the bottle has a 90-day supply, and my horse will just eat them out of his bucket with his other supplements (I use Stabul 1 as his "grain"). Vitamin E is one of the easier parts of the whole picture once you get it dialed in.
Vitamin E on Amazon
Hang in there, this gets much easier.
Joy and Willie (EC/IR)
Nevada County, CA - 2019
Case history: Willie's Case History
Willie's photo album: Willie's Photos