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The 8 Best selenium supplement for horses of 2025

Are you trying to find selenium supplement for horses among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling selenium supplement for horses on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 20 hours of research and did 30 selenium supplement for horses tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best selenium supplement for horses you can buy today

No. 1
Farnam Horse Health Vita E & Selenium Crumbles Horse Vitamin Supplement, Supports optimal muscle health & antioxidant support, 3 lbs., 96 day supply
  • MUSCLE HEALTH: Supports optimum muscle health for horses exerting severe physical effort
  • ANTIOXIDANT SUPPORT: Helps support cell activity and protect cell membranes from free radicals
  • IMMUNE HEALTH: helps support and maintain a strong immune system
  • SUPPORTS PERFORMANCE DEMANDS: Helps keep horses in peak condition
  • KEY INGREDIENTS: Contains balanced levels of vitamin E and selenium that can contribute to the correction of nutrient deficiencies
  • PALATABLE: Easy-to-feed larger crumble for less sorting
No. 2
Farnam Vita-Min E & Selenium Antioxidant Supplement, 3 pounds, 96 Day Supply
  • Supports optimal muscle health for horses with physically demanding workloads
  • Helps keep horses in peak condition
  • As horses use their muscles, free radicals are released that can lead to fatigue and changes throughout the body.
  • Helps correct nutrient deficiencies
  • Provides 625 IU of vitamin E and 1 mg of Selenium per 1/2 oz. serving
SaleNo. 3
Vita Flex Pro E and Horse Selenium Supplement, Balanced Essential Antioxidants, 4 Pound, 64-Day Supply
  • Balanced levels of Vitamin E and Selenium suitable for a wide variety of equine diets
  • Blended with a quality yeast culture base
  • Premium quality horse vitamin supplement
  • Can contribute to the correction of nutrient deficiencies.
  • Palatable & easy to feed blended powder
  • Available in a 64- and 320 - day supply
SaleNo. 4
Kentucky Performance Prod Elevate Se Natural Vitamin E and Selenium Powder for Horses, 2 Pound Container
  • Elevate Se was formulated to supply a combination of powerful antioxidants that support the scavenging and neutralizing of the damaging oxidative byproducts known as free-radicals
  • This unique blend of natural vitamin E and organic selenium yeast support healthy muscle, nerve and reproductive functions
  • When in use this product helps support and maintain a strong immune system
  • Elevate Se is formulated specifically for horses that require supplementation with highly bio-available sources of both vitamin E and selenium
SaleNo. 5
UltraCruz - sc-363248 Equine Selenium Yeast Supplement for Horses, 1 lb, Powder (226 Day Supply)
  • Important antioxidant and trace mineral
  • Can help protect against free radical damage
  • Helps provide muscle and joint support
  • Aids normal metabolic function
  • Supplied as a 1 pound bag of powder
No. 7
Vita Flex Pro E and Horse Selenium Supplement, Balanced Essential Antioxidants, 20 Pound, 320-Day Supply
  • Balanced levels of Vitamin E and Selenium suitable for a wide variety of equine diets
  • Blended with a quality yeast culture base
  • Premium quality horse vitamin supplement
  • Can contribute to the correction of nutrient deficiencies.
  • Palatable & easy to feed blended powder
  • Available in a 64- and 320 - day supply
No. 8
Horse Guard 10 lb, Equine Vitamin Mineral Supplement with Organic Selenium & Vitamin E
  • Highly Concentrated: Horse Guard is the most highly concentrated equine supplement on the market, meaning you only need to give your horse two ounces a day to ensure they get the nutrients they need that are typically lacking in their hay.
  • Comprehensive Nutrition: Our formula contains a blend of essential vitamins and minerals that are critical for maintaining optimal health and well-being in horses.
  • Organic Selenium: Selenium is a trace mineral that is essential for proper immune and muscle function as well as overall health. Our formula contains 3 mg of organic selenium, which is more readily absorbed by the body than inorganic forms.
  • Vitamin E: Vitamin E is a powerful antioxidant that supports healthy muscle function and immune system health. Our product includes 1,000 IU of Vitamin E per dose, ensuring your horse gets the ideal amount of this vital nutrient.
  • Improved Digestion: Horse Guard also contains probiotics and prebiotics that help improve digestion and support a healthy hindgut microbiome.
  • Trusted by Professionals: Horse Guard is trusted by professional horse trainers and veterinarians across the country, who rely on our formula to keep their horses in peak condition.
No. 9
UltraCruz Equine Selenium Supplement for Horses, 25 lb. Pellet (200 Day Supply)
4 Consomer Reviews
UltraCruz Equine Selenium Supplement for Horses, 25 lb. Pellet (200 Day Supply)
  • Important antioxidant and trace mineral
  • Can help protect against free radical damage
  • Helps provide muscle and joint support
  • Aids normal metabolic function
  • Supplied as a 25 lb. bag of pellets
No. 10
UltraCruz - sc-516463 Equine Selenium Yeast Supplement for Horses, 10 lb, Pellet (80 Day Supply)
  • Important antioxidant and trace mineral
  • Can help protect against free radical damage
  • Helps provide muscle and joint support
  • Aids normal metabolic function
  • Supplied as a 10 lb. bag of pellets
No. 11
E-Se-Mag (10lb) for Muscle Function & Recovery in Horses
  • 10 lbs - 160 servings
  • Unique Combination
  • Pellets
No. 12
Kauffman's Animal Products Vitamin E & Selenium Powder 4 lb
2 Consomer Reviews
Kauffman's Animal Products Vitamin E & Selenium Powder 4 lb
  • Can Provide A Balanced Defense Ants Deficiency
  • Vitamin E And Selenium Supplement
  • Blended Into An Easy-To-Feed Powder Base For Equine Use
No. 13
Equerry's Vitamin E and Selenium 1 oz. Provides 2000 IU's of Vitamin E and 2 mg Organic Selenium, 5lb.
  • Vitamin E and Organic Selenium Microencapsulated Probiotics Digestive Enzymes
  • Supplement Vitamin E and Selenium 100% Organic Selenium
  • Organic Selenium
No. 14
North American Salt 41027S American Stockman Selenium 90 Block Salt Pet Supplement, 50-Pound
  • 50 Lb., Selenium 90 Block Ag Salt
  • Boosts Selenium Levels and Adds Copper
  • Selenium Is An Antioxidant, Protecting Against Disease By Promoting Healthy Immune Systems
  • Regulates An Animal's Ability To Handle Stress
  • For All Classes Of Beef Cattle and Horses
No. 15
SU-PER E-Se Horses Antioxidant Supplement - Vitamin E & Selenium for Sore Muscles Support - 1 Gallon + Pump, 4 Month Supply (120 Days)
  • MUSCLES SUPPORT: SU-PER E-Se contains Vitamin E supports proper immune system and muscle function. When fed in combination with Selenium, these nutrients can help provide support for sore muscles.
  • VITAMIN E: Vitamin E is a potent and efficient antioxidant in terms of neutralizing free radicals and protecting healthy cells. Vitamin E also plays a vital role in immune, cardiovascular, circulatory, neuromuscular, and reproductive functions.
  • SELENIUM: Selenium works to produce antioxidant glutathione, which protects these membranes from free radical damage, and maintaining cell integrity. Selenium also helps play a role in thyroid function, immune responses, and in protecting muscle tissue from degeneration.
  • BALANCED MINERALS: Vitamin E & Selenium work best when paired together. They create a balance, which extends the effectiveness of both nutrients, working together to more efficiently neutralize existing free radicals as well as stop the formation of new ones.
  • USER-FRIENDLY PUMP: Upgrade your supplement dispensing with our efficient one-ounce liquid pump designed for standard 1-gallon bottles. This heavy-duty, leak-proof pump ensures precision in every dose. It is washable and reusable, making it the ideal companion for hassle-free equine supplementation.
No. 16
Vitamin E & Organic Selenium 10 lb, 5,000 IUs of Vitamin E and 3 mg of Organic Selenium per Dose
  • 3 mg of Organic Selenium & 5000 IUs Vitamin E in a 2 ounce dose
  • Only the highest quality ingredients
  • Made in Oregon
  • Formulated by Certified Equine Nutritionists
  • Orders placed with Amazon.com are fulfilled directly by the manufacturer
SaleNo. 17
VITAMIN E & SELENIUM POWDER
  • Normally, green grass provides the vitamin E horses need. However, when their diet transitions to high levels of hay or horse doesn’t have access to good pasture, vitamin E deficiencies can occur.
  • Highly palatable supplement provides antioxidant support for all classes of horses. Important for immune system, nerve and muscle function.
  • Recommended for use in vitamin E and selenium deficient horses, performance and endurance horses, high hay diets and for added muscle support.
  • Contains Vitamin E, a fat-soluble vitamin and potent antioxidant that plays essential roles throughout the body, including the immune system, reproductive health and normal functioning of nerves and muscles.
  • Also contains Selenium, an important antioxidant trace element, which is essential for cellular function in the body, correct functioning of the immune system and muscle health.
No. 18
Kauffman's Animal Health Vitamin E & Selenium Pellets 4 lb
3 Consomer Reviews
Kauffman's Animal Health Vitamin E & Selenium Pellets 4 lb
  • Can provide a balanced defense against the deficiency
  • Vitamin E & Selenium supplement for horses
  • Blended into an easy-to-feed pellet
  • Size: 4 lbs
No. 19
No. 20
Finish Line Vitamin E & Selenium Horses Diet - 4 lbs
  • Vitamin E & Selenium Horses Diet
  • Quality selection for everyday pet needs
  • Assured hygiene and care for petsDosage
  • 4 lbs is 100 day supply for 1 horse at 18g (0.5 vol. oz.) per day.Specifications
  • Capacity: 4 lbs

How to choose a good selenium supplement for horses

Does the idea of finding a fantastic selenium supplement for horses make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in selenium supplement for horses. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top selenium supplement for horses products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top selenium supplement for horses on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top selenium supplement for horses brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top selenium supplement for horses based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the selenium supplement for horses were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good selenium supplement for horses, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your selenium supplement for horses.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting selenium supplement for horses for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our selenium supplement for horses. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what selenium supplement for horses should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on selenium supplement for horses.