As a horse owner, you know that your horse's digestive health is essential to its overall well-being. Digestive supplements like probiotics and digestive enzymes can help support your horse's digestive system and promote better nutrient absorption. Probiotic supplements, in particular, have become increasingly popular in recent years for their ability to help maintain a healthy gut microbiome.

When choosing a probiotic supplement for your horse, it's important to consider the specific strains of bacteria included in the formula, as well as the overall quality of the product. Look for a probiotic supplement that contains a variety of beneficial strains, such as Lactobacillus acidophilus and Bifidobacterium animalis. Additionally, you'll want to choose a product that is backed by scientific research and is effective in supporting the digestive health of horses.

In addition to probiotics, digestive enzymes can also be beneficial for horses. These enzymes help break down complex carbohydrates and proteins, making it easier for your horse to digest their food. When choosing a digestive enzyme supplement, look for one that includes a broad range of enzymes, such as amylase, protease, and cellulase, to ensure comprehensive digestive support.

How to Find the Best Probiotic for Horses

Here are the key points on how to find the best probiotic for horses, along with probiotic and prebiotic supplements, and beneficial bacteria:

Probiotic supplements should contain a high number of live and active bacteria per dose, typically in the billions. Look for a supplement that contains a variety of bacterial strains, such as Lactobacillus acidophilus, Bifidobacterium bifidum, and Streptococcus thermophilus.

Make sure the supplement is designed specifically for horses, as supplements designed for other animals or humans may not be suitable. Consider the form of the supplement, such as powder or paste, and how easy it is to administer to the horse.

Prebiotic supplements should contain a variety of fiber sources, such as beet pulp, alfalfa meal, and soy hulls. Consider the amount of prebiotics in the supplement, as some may contain more or less than others.

Make sure the supplement is designed specifically for horses. Consider the form of the supplement, such as pellets or powders, and how easy it is to administer to the horse.

Beneficial bacteria for horses include Lactobacillus acidophilus, Bifidobacterium bifidum, Streptococcus thermophilus, and Enterococcus faecium. Lactobacillus acidophilus helps regulate the pH of the digestive tract and aids in the breakdown of food.

Bifidobacterium bifidum supports the immune system and helps prevent harmful bacteria from growing in the gut. Streptococcus thermophilus aids in the digestion of lactose and helps break down food into simpler components. Enterococcus faecium supports the immune system and can help prevent diarrhea in horses.

Overall, it's important to consult with a veterinarian to determine the specific needs of your horse and to find the best probiotic and prebiotic supplements for their digestive health.

How We Choose the Best Probiotic for Horses

Choosing the best probiotic for horses can be a challenging task given the many options available on the market. Here are some factors to consider when selecting a probiotic for your horse:

Specifically Formulated for Horses

Probiotics formulated for other animals or humans may not be suitable for horses, as their digestive systems have different requirements.

The strain of Beneficial Microorganisms

Different strains of beneficial microorganisms have different effects on the horse's digestive system. Some strains, like Lactobacillus acidophilus, help regulate the pH of the gut, while others, like Enterococcus faecium, support the immune system.

Evaluate the Number of Live Microorganisms

The efficacy of a probiotic supplement depends on the number of live microorganisms in it. Look for a product with a high concentration of live microorganisms per dose, typically in the billions.

Form of the Supplement

Probiotic supplements come in different forms, such as powders, pastes, and pellets. Consider which form is most convenient for you and your horse.

Look for Prebiotics

Prebiotics are compounds that support the growth and activity of beneficial microorganisms in the horse's gut. Look for probiotic supplements that contain prebiotics, such as fructooligosaccharides, beet pulp, and inulin.

Check for Third-Party Testing and Quality Control

Reputable manufacturers of horse probiotics should subject their products to third-party testing to ensure their quality and purity. Look for products that have undergone such testing.

Overall, choosing the best probiotic for your horse involves considering the strain of beneficial microorganisms, the number of live microorganisms, the form of the supplement, the presence of prebiotics, and quality control measures. By carefully evaluating these factors, you can select a probiotic supplement that supports your horse's digestive health and overall well-being.

FullBucket Equine Probiotic Paste

Best Probiotics for Horses

FullBucket Equine Probiotic Paste with Saccharomyces Cerevisiae Boulardii for Daily Digestive Optimization; Concentrated Formula with 100 Billion CFUs, 1 Tube

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Why We Love It

FullBucket Equine Probiotic Paste is the perfect option for equine digestive system health. It contains 101 billion CFUs of probiotics, prebiotics, and L-Glutamine to help support the gut in horses. It also helps combat common GI issues such as ulcers, colic, colitis, diarrhea, gas, and weight loss. The probiotic paste is all-natural, show-approved, and provides daily digestive maintenance and health.

What You Should Know

FullBucket Equine Probiotic Paste is formulated with microencapsulation to protect from heat, moisture, and stomach acid, so the probiotics arrive in the gut alive. It can safely be used with antibiotics to provide highly effective digestive health benefits for horses. Plus, it's very easy to feed and the horses love it!

Fastrack Microbial Pack Probiotics

Best Probiotics Microbial Pack for Horses

Fastrack Microbial Pack Probiotics

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Why We Love It

Fastrack Microbial Pack Probiotics for horses is the perfect choice for horse owners looking to improve their animals' health and performance. This all-natural formula contains beneficial bacteria, yeast culture, and enzymes to help with general health maintenance and enhance the immune response to pathogen challenges and stress. It's easy to administer to the horse, making it an ideal choice for any horse owner.

What You Should Know

When it comes to probiotics for horses, Fastrack Microbial Pack Probiotics are one of the best on the market. They are a great choice for any horse owner looking to maintain their horse's health and optimize their performance. Plus, the all-natural formula is safe and gentle on the digestive tract, so you can have peace of mind knowing your horse is getting the best care possible.

Probios Probiotic Powder

Best Powder Probiotics for Horses

Probios Probiotic Powder for Animals 240g

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Why We Love It

Probios Probiotic Powder is the perfect choice for horse owners looking for a top-notch probiotic to promote digestive health in their animals. The powder contains live (viable) microorganisms that are intended to supplement the digestive system of animals, helping to balance and promote healthy bacteria in the digestive tract. This can help support a good appetite and normal immune function, as well as help with changes in routine such as feed changes or travel.

What You Should Know

Probios Probiotic Powder is also guaranteed to contain at least two billion Colony Forming Units (CFU) per gram, which ensures that your horse will receive the maximum benefit from the probiotic. The formula also contains a wide variety of beneficial microorganisms and is free of artificial preservatives and flavoring.

SCD Bio Livestock

Best Organic Liquid Probiotics Supplement

SCD Bio Livestock - Probiotic Feed and Water Additive, Organic Liquid Probiotic Supplement for Cows, Pigs, Horses, Chickens, Ducks, Rabbits, by SCD Probiotics - 1 Liter

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Why We Love It

SCD Bio Livestock is the best probiotic for horses, designed to promote healthy, balanced guts in livestock. With regular use, SCD Bio Livestock helps protect against growth and performance losses, improves feed conversion rates and weight gain, and reduces mortality rates. Its liquid formula is easy-to-use and store, with a guaranteed shelf life, and is OMRI-Listed for Organic Use.

What You Should Know

SCD Bio Livestock is a powerful probiotic that helps keep your horse’s digestive system in balance without the need for steroids or antibiotics. Its special blend of probiotics, enzymes, and other beneficial microorganisms helps restore and maintain the balance of essential bacteria in your horse’s gut. SCD Bio Livestock is formulated with natural ingredients that are safe for your horse’s health, making it an ideal choice for any horse owner.

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Buyer's Guide

How do you evaluate probiotic potency in a horse supplement?

Here are some common methods:

Colony Forming Units (CFUs)

This is a standard method for measuring the concentration of viable microorganisms in a supplement. The CFU count represents the number of live bacteria in the product that can reproduce and form colonies. The higher the CFU count, the more potent the probiotic.

Microbial viability

The viability of the microorganisms can be tested by culturing them under specific conditions to ensure that they are still alive and active.

DNA analysis

DNA analysis can be used to identify the specific strains of bacteria present in the supplement and confirm their potency.

Clinical studies

Clinical studies can be conducted on horses to evaluate the effectiveness of the probiotic supplement. The studies can measure parameters such as digestive health, immune function, and overall well-being to determine if the supplement is effective.

It is important to note that potency is just one factor to consider when evaluating a probiotic supplement. Other factors such as strain selection, stability, and delivery method should also be taken into account when choosing a probiotic supplement for horses.


Probiotics are live microorganisms that provide a variety of health benefits to animals, including horses. By promoting the growth of beneficial bacteria in the gut, probiotics can improve digestion, boost the immune system, and enhance overall health and well-being. As such, many horse owners are turning to probiotic supplements to support the health of their equine companions.

But with so many probiotic strains and products available, it can be challenging to know which one is best for your horse. In this FAQ guide, we'll explore the benefits of probiotics for horses, the specific strains of probiotics that are best suited for equine health, and answer some common questions about using probiotics to promote a healthy immune system in horses.

What are some alike yeast probiotics that are similar to Saccharomyces boulardii?

Saccharomyces boulardii is a yeast probiotic that has been extensively researched for its health benefits, particularly in supporting digestive health and immune function. Other yeast probiotics that are similar to Saccharomyces boulardii in terms of their health benefits include Candida kefir, Candida krusei, and Kluyveromyces marxianus. These yeast strains have also been shown to have beneficial effects on the gut microbiome, supporting healthy digestion and immune function. Additionally, like Saccharomyces boulardii, these yeast probiotics have been shown to have antimicrobial properties, which can help to reduce the growth of harmful bacteria in the gut.

How can equine probiotic usage improve digestive health, and what are some effective digestive supplements for horses?

Equine probiotics can improve digestive health by promoting the growth of beneficial bacteria in the gut, which can help to improve nutrient absorption and reduce the risk of digestive disorders such as colic and diarrhea. Some effective probiotic strains for horses include Lactobacillus acidophilus, Bifidobacterium bifidum, and Enterococcus faecium. In addition to probiotics, there are also a variety of digestive supplements available for horses that can support digestive health, including prebiotics, enzymes, and fiber supplements. However, it is important to note that not all supplements are created equal, and horse owners should carefully research and select products that are safe and effective for their animals.

What are some milk-derived probiotics that can promote a healthy gastrointestinal tract in horses?

Milk-derived probiotics are known for their potential benefits in promoting a healthy gastrointestinal tract. For horses, some of the commonly used milk-derived probiotics include Lactobacillus acidophilus, Lactobacillus casei, and Streptococcus thermophilous. These probiotics can help regulate the gut microbiota and support digestive health in horses. They work by increasing the population of beneficial bacteria, improving nutrient absorption, and reducing inflammation in the gut. However, it's important to note that the effectiveness of probiotics in horses may vary depending on several factors, including the type and dosage of the probiotic, the horse's health status, and the diet. Consulting with a veterinarian before administering any probiotic supplement to a horse is recommended.


Probiotics can be a valuable addition to any horse's diet, supporting optimal gut health and a healthy immune system. When choosing a probiotic supplement for your horse, it's important to consider the potency of the product, including the number of live microorganisms per dose, the specific strains of bacteria included, and the form of the supplement.

Regularly evaluating your horse's digestive support and health and working closely with your veterinarian can help you identify the best probiotic supplement for your horse's individual needs. With proper care and attention, probiotics can help promote optimal gut health and overall wellness in horses.