Horse and herbs in summer

Herbs for Horses: Common Herbs, Uses, Benefits, and When Balanced Nutrition May Be the Real Solution

Herbal supplements for horses have become increasingly popular as owners look for natural ways to support equine health. Many equine supplements now include plant-based ingredients such as chasteberry, raspberry leaf, chamomile, garlic, and turmeric. These are commonly marketed for calming, digestion, hormonal balance, respiratory health, and joint support.

Horse owners may add herbs to address concerns such as nervous behavior, poor coat condition, weight loss, or reduced performance. However, these issues may sometimes stem from health concerns, nutritional imbalances, inadequate forage intake, or deficiencies in essential nutrients rather than problems that herbal supplements can solve.

In this article, we’ll discuss common herbs used for horses, what research says about their potential benefits, and when balanced nutrition may actually be the real solution.

The Growing Interest in Herbal Supplements

Many horse owners today are increasingly interested in natural approaches to supporting equine health, including herbal supplements. Herbs are commonly used in horses for a wide range of purposes, such as:

  • Calming nervous or anxious horses
  • Supporting hormonal balance
  • Promoting respiratory health
  • Aiding digestive function
  • Supporting joint comfort and mobility
  • Exercise Recovery

Many of these plants have a long history of traditional use in herbal medicine. However, scientific research evaluating their effectiveness and safety in horses remains limited in many cases. While some herbs show potential benefits, much of the information available is based on anecdotal experience rather than controlled studies.

For this reason, it is important to view herbs as supplements rather than primary solutions. They may offer supportive benefits in certain situations, but they should never replace proper veterinary care, management, or a nutritionally balanced feeding program. Before adding herbs or other supplements to a horse’s diet, owners should first evaluate if the horse’s nutritional foundation is balanced and meeting their needs. 

The Foundation: Why Balanced Nutrition Comes First

The foundation of a horse’s diet should be high-quality forage. Feeding adequate amounts of quality forage throughout the day helps meet a horse’s basic nutrient requirements while supporting normal digestive function, maintaining healthy hindgut microbial populations, and promoting overall health.

In addition to forage, horses require adequate calories, protein, vitamins, and minerals to support energy, maintain body condition, and promote long-term wellness—especially in working or performance horses. When these nutritional needs are not met, horses may develop issues that owners sometimes attempt to address with supplements or herbs.

However, many concerns that horse owners try to address with herbal supplements may actually stem from nutritional imbalances, deficiencies, or management factors.

For example, poor topline development in horses is often linked to insufficient intake of high-quality protein and essential amino acids needed for muscle, such as lysine, methionine, and threonine.

Underweight horses may require additional calories to improve body condition. Offering free-choice pasture or hay is an important first step, along with calorie-dense, high-fat, and fiber-based feeds that can help support healthy weight gain.

A dull, dry, or brittle hair coat can also signal nutritional deficiencies, particularly in copper, zinc, protein, or omega-3 fatty acids. In some cases, parasites, dehydration, or poor digestion may also contribute to poor coat quality.

Behavioral changes may also be influenced by factors such as ulcers, pain, improper feeding practices, or management issues—such as insufficient forage intake throughout the day, which can affect digestive health and overall comfort.

In many cases, addressing the horse’s overall feeding program is more effective than adding additional herbal supplements.  Evaluating forage quality, ensuring adequate caloric intake, and providing balanced vitamins, minerals, and amino acids can often address these concerns at their root.

A balanced diet— including a well-formulated concentrate feed or ration balancer that meets an individual horse’s specific nutritional needs—helps ensure horses receive the nutrients that forage alone may not provide.

Once a horse’s foundational nutrition is addressed, horse owners can more effectively evaluate whether additional supplements, including herbs, may play a supportive role.

Common Herbs Used in Horses

Horse owners use a variety of herbs to support different aspects of equine health. While some herbs have traditional uses, research supporting their effectiveness in horses varies widely by herb.

Chasteberry (Vitex)

Chasteberry is commonly used in horses to support hormonal balance and mood stability, particularly in mares experiencing behavioral changes related to the estrus cycle. It is also sometimes used in horses showing symptoms of pituitary pars intermedia dysfunction (PPID), or Cushing’s disease.

Chasteberry contains compounds believed to influence dopamine activity within the hypothalamus–pituitary axis, which regulates reproductive hormones and endocrine function. Some owners report improvements in coat quality, shedding, and attitude, but research in horses remains limited, with mixed results.

While chasteberry may provide mild supportive benefits, it does not lower ACTH levels and should not replace veterinary treatment such as pergolide when managing PPID. Because it can affect reproductive hormones, it is generally not recommended for pregnant or lactating mares, young horses, or breeding stallions.

Raspberry Leaf

Raspberry leaf (Rubus idaeus) is commonly included in herbal supplements intended to support reproductive health in mares. Traditionally, dried red raspberry leaf has been used to help balance hormones, calm moody mares, and support uterine tone during pregnancy and late gestation. Some horse owners also use it to help reduce irritability associated with heat cycles.

Research in both animals and humans suggests that raspberry leaf can influence smooth muscle activity, which may explain its traditional use for supporting uterine function. However, scientific studies specifically evaluating its effects in horses remain limited, and much of the current information comes from traditional herbal practices and anecdotal reports.

Because of this, raspberry leaf is best viewed as a supportive supplement rather than a primary tool for reproductive management. Proper veterinary care and balanced nutrition remain essential for supporting a mare's reproductive health.

Chamomile

Chamomile is widely recognized for its mild calming properties and is commonly used to promote relaxation or digestive comfort in horses. This natural herb is often fed to nervous, anxious, or high-strung horses and may help soothe mild digestive issues such as tension-related spasms or digestive upset. In humans and other species, chamomile has been studied for its calming effects on the nervous system.

However, controlled research evaluating chamomile specifically in horses remains limited. While some horse owners report calming benefits, factors such as training, management, environment, and nutrition typically play a much larger role in influencing equine behavior. Chamomile may provide mild supportive benefits, but should not be relied upon as the primary solution for behavioral concerns.

Garlic

Garlic is another herb commonly included in equine supplements and is often used to support immune and respiratory function. Some horse owners also feed garlic as a natural fly deterrent.

However, garlic should be used cautiously. When fed in excessive amounts, garlic can cause Heinz body anemia due to the toxin N-propyl disulfide, which damages red blood cells. Research shows that while very small amounts may have minimal effects, long-term or high-dose supplementation can significantly reduce hemoglobin and red blood cell counts.

Turmeric

Turmeric has gained popularity for its potential anti-inflammatory properties and is commonly used to support equine health and exercise recovery. Its active compound, curcumin, has been studied in several species and is known for a range of biological properties, including anti-inflammatory, antioxidant, antibacterial, antiviral, antifungal, and cellular regulatory effects.

Because of these properties, turmeric is often included in supplements intended to support recovery, comfort, and overall wellness in horses. However, while turmeric may provide supportive benefits in certain situations, it should complement—not replace—proper joint management, conditioning programs, and balanced nutrition.

Tribute Essential K Rebuild includes turmeric for the purpose of improving post exercise muscle recovery. 

When Herbs May Play a Supportive Role

In certain situations, herbs may provide complementary support as part of a broader management strategy. Some horse owners choose to incorporate herbal supplements during periods of stress, environmental changes, or seasonal transitions. Herbs may also be used alongside veterinary care and traditional medication to support horses with specific health concerns or during certain life stages.

When considering herbal supplements, product quality, appropriate dosage, and veterinary guidance should always be considered. Not all herbal products are created equally, and the safety and effectiveness of individual ingredients can vary widely.

How Tribute Nutrition Supports Horses Through Balanced Nutrition

While some herbs may offer targeted support in certain situations, the foundation of equine health begins with a balanced diet built on quality forage and properly formulated nutrition. When horses receive adequate energy, protein, vitamins, and minerals, many common concerns related to coat condition, body condition, performance, and overall wellness can often be addressed through nutrition alone.

Before introducing herbal supplements, horse owners should evaluate the horse’s overall diet to ensure foundational nutritional needs are being met. This includes assessing forage quality through hay testing, providing adequate forage intake throughout the day to support digestive health, and ensuring sufficient calories to match workload and maintain proper body condition.

The right grain concentrate feeds or ration balancers, designed to complement the forage type and the horse's lifestyle, can help fill nutritional gaps and support performance, recovery, and long-term wellness.

Tribute Equine Nutrition offers several feeds and supplements designed to help support horses through balanced nutrition:

  • Essential K® Rebuild – A low sugar and starch (12.5% NSC) ration balancer designed to support recovery in active and performance horses. Formulated with chromium to support healthy glucose metabolism and turmeric to aid post-exercise muscle recovery, it provides concentrated vitamins, minerals, essential amino acids, antioxidants, and digestive-supporting pre- and probiotics without excess calories, starches, or sugars. It can be fed alone for easy keepers or top-dressed on existing feed programs to help balance forage-based diets.
  • Synergize® – A high-fat, high-fiber performance feed that provides calorie-dense nutrition along with quality protein and essential amino acids to support muscle development, topline, and sustained energy for hard-keeping or hard-working horses.
  • Constant Comfort® Plus – A digestive support supplement designed to help maintain healthy gastric pH and support stomach and hindgut health, especially during periods of stress, travel, or routine changes. It contains aloe vera, glutamine, lecithin, seaweed-derived calcium, and Equi-Ferm XL® pre- and probiotics to help soothe the stomach lining and support digestive health.
  • Natural Remedy® – A DHA-rich omega-3 supplement that supports a healthy inflammatory response, immune function, and overall wellness in horses. By providing a direct source of DHA, it helps maximize the anti-inflammatory benefits of omega-3 fatty acids and may support respiratory health, reduce post-exercise inflammation, improve fertility in stallions, and help manage seasonal allergies or respiratory conditions such as heaves.

Because every horse’s nutritional needs vary depending on age, workload, metabolism, and forage type, Tribute offers free personalized feeding plans through our team of equine nutritionists to help horse owners build a balanced feeding program that supports long-term health and performance.

References

Article By:
Chris Mortensen, Ph.D.
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