Is There Enough Selenium In Horse Guard


“Is there enough Selenium in Trifecta for horses in a Selenium deficient areas? I am feeding Platinum Performance now and even though there is Selenium in that supplement, it is not enough for this area in Northeastern California.”

Answer by Ph.D. Equine Nutritionist, Kelsey Johnson Nonella:
Yes, 8 ounces of Trifecta contains 3 mg of 100% organic selenium, which are adequate amounts of selenium to horses in extremely deficient areas. I think that you will be extremely satisfied with Trifecta to only provide your horse with adequate selenium levels, but also provide hoof, joint, and gut support.



About Dr. Kelsey J. Nonella Ph.D., P.A.S.

Kelsey J. Nonella, Ph.D. is an equine nutritionist who was riding horses before she could walk. Her love for horses drives her to help educate people on what their horses’ needs in order to have happy, healthy horses. Kelsey went to Cal Poly receiving a Bachelor’s of Science in Animal Science and then onto West Texas A&M, where she got her Masters and eventually her Doctorates in Equine Science. At A&M, Dr. Nonella did extensive research on Selenium within horses. Click here to view her research. Kelsey’s colleagues have mentioned her as one of the United States equine Selenium experts.
View all posts by Dr. Kelsey J. Nonella Ph.D., P.A.S.

2 Responses to “Is There Enough Selenium In Horse Guard”

  1. Ann Marie Mullenix says:

    I have a 7 month old gypsy vanner stud colt that is getting 3/4’s of a scoop of grain twice and 2 flakes a day of 1/2 grass/hay mixture and 1/2 alphapha. I just started him on house guard hoof and hair and flick treats, should I be giving him horse guard as well and /or something else, I know our area has little to no selenium. Thank you.

    • mm Dr. Kelsey J. Nonella Ph.D., P.A.S. says:

      Ann Marie,

      Thank you for the question. Yes, if you are feeding your stud colt Hoof and Hair Guard and Flix you should feed Horse Guard as well to ensure his vitamin and mineral needs are being met. This is especially important if you are a selenium deficient area. If you have any more questions email me at and I will get back to you in a more timely matter.

      Thank you!

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