"A perennial Horse Journal favorite for sore-muscle support" - Horse Journal, June 2013

  • Category: Vitamin Supplements
  • Brand: MVP Med-Vet Pharmaceuticals
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E-SE-MAG™ contains the first unique combination of high levels of Vitamin E, selenium and magnesium. As reported in the Horse Journal , vitamin E and selenium supplementation may aid in nutritional support in the presence of sore muscle problems.  Determine total selenium content in ration prior to supplementation.  Pellets.


Guarnateed Analysis (per 1 oz serving):

Magnesium (Mg), Min.........3,000 mg

Selenium (Se), Min.....................2 mg

Vitamin E, Min......................1,000 IU

Feeding directions:  Provide 1/2 to 1 oz daily. 



"A perennial Horse Journal favorite for sore-muscle support"

- Horse Journal, June 2013


Click here for more information on Tying-Up and PSSM                                               



(Excludes Sand-Free)

The map below indicates ground transit time via Fed Ex. All orders placed before 3:00 p.m. CST will be shipped the same day.  ALL orders placed Friday (after 3PM)/Saturday/Sunday will be shipped the following Monday.


Orders placed over the weekend (Friday after 3PM/Saturday/Sunday) will be shipped the following Monday.  All vaccines orders are shipped to be received within the same week (ie. Any order placed Wednesday (after 3 p.m. CST), Thursday or Friday to ship 2 day air, we will hold your order to ship on the following Monday).  No vaccines will be shipped on a Friday.

We strongly recommend ALL vaccine orders be shipped 2nd day or Next day air. Vaccines not shipped in this manner are non-returnable/non-refundable.  All vaccine orders are shipped in a bio-cooler with ice ice packs.  

2-DAY AIR:  $22.00
Next Day Air:  $35.00

NOTE  Express order delivery time:  Example:  2 day air (2 business days) - if your order ships on Monday, you will receive it Wednesday.  Air shipping Flat Rates apply to FedEx service only.  Vaccines are not shipped on Fridays - NO Saturday express deliveries unless requested (additional express charges will apply).

WEATHER DELAYS:  We are not able to reimburse air charges due to inclement weather that is not in our control.



Unless item is designated "FOB", or marked "Freight Charges Apply" shipping by ground service is FREE within the contiguous 48 states (Fed Ex ground or SpeeDee only).

 MVP supplements ship FREE (Exlcuding Sand Free).

If shipping to a commercial address: Your package will be delivered during the work week (Monday through Friday).

WHEN ORDERING REMEMBER $35.00 minimum order necessary for shipment.
$35.00 - $75.00 order add $6.95 handling.
ALL products marked FOB (Freight On Board) OR Freight Charges Apply - will incur a freight charge.







National Animal Supplement Council (NASC), an industry group dedicated to protecting and enhancing the health of companion animals and horses throughout the United States. Founded in 2001, NASC Members are industry participants and other stakeholders of the finest animal supplements who are committed to the highest current standards of quality in the industry today.

The Council's overriding goal is to promote the health and well-being of non-human food chain animals that are given nutritional supplements by their owners, and to protect and enhance the integrity of the animal supplements industry.

The cornerstone of NASC's mission is to work cooperatively with state, federal, and international governmental officials to create a legislative and regulatory environment that provides a framework that is Fair, Reasonable, Responsible and Nationally Consistent.

Such an environment of safety, accuracy and quality serves the interests of NASC's members by ensuring that ethical manufacturing and labeling practices are complied with throughout the industry.

NASC Seal of Quality…

As part of its ongoing effort to improve and standardize the animal supplement industry, NASC initiated its Quality Seal Program. The Seal is a way for consumers to know that when they buy a product, they buy from a reputable manufacturer that has successfully completed a facility audit. Different from theNASC logo, the Seal is a privilege for members to use on their products and signifies that the company has been audited for the implementation of specific standards. Members must agree to adhere to NASC’s quality standards, part of which includes submitting to an independent audit to ensure conformance with quality system requirements.


SKU:  Size FOB Cost/Serving Price Quantity
73160164 10lb (160 servings) Foil Bag Ships FREE 45¢ $72.55
73160172 20lb (320 servings) Bucket Ships FREE 43¢ $136.90

Product Ratings and Reviews

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5.0 out of 5.0 stars
  • Barry
  • Wykoff, MN
  • Tuesday, February 20, 2018
For my endurance horses and coming from a selenium deficit area I need the balance of the Vit E along with the Magnesium and the selenium to give my horses the ingredients they need for the long distances and speeds that we do along with the conditioning that is so necessary in my sport. It does a wonderful job giving that to my Arabians.
  • Amanda
  • ,
  • Friday, October 27, 2017
Have been using MVP E-Se-Mag for over a year. Excellent product for my selenium deficient area, all horses and one donkey are doing beautifully on it :) Palatable pellets are easy to feed. Also love the 20lb reusable bucket.
  • Alicia
  • Junction City, OR
  • Sunday, February 26, 2017
My reiner was experiencing a really tight back. Even though she was already on a selenium product, my vet recommended putting her on e-se mag. I added it to her feed and made it really made a big difference in relaxing those tight back muscles. Very please with the result and now have a much happier horse.
  • Kris
  • ,
  • Tuesday, August 16, 2016
After my veterinarian recommended that I add more selenium to my horses daily diet I started them on E-SE-MAG. After just a short while (1 month) I have seen a difference in the "drive" they have on the hills and trails we ride. They are also starting to get better muscle in the hind end. It has been a great addition to the Mega-Mag that they already take to go with the hay that we get in the area we live in.
  • Kimberly
  • Mount Pleasant, MI
  • Monday, June 9, 2014
This was recommended to my animals because of mood problems. They were (still are) very attached to the herd and hate to go out alone. My trainer recommended the magnesium to help stabilize them. The selenium they need anyway so I purchased this. They've been taking this a year and I'm pleased with the results! Animals are healthy and I think they are happier too.