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Horse Calming Supplements: A Practical Guide for Stress Relief

Published on: December 27, 2024

By: Miles HenryFact Checked

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If you’ve ever felt overwhelmed managing an excitable horse, you’re not alone. Horses naturally react to stress, and high-pressure situations like travel or competition can challenge even seasoned horse owners. Over 25 years of working with Thoroughbreds and Quarter Horses, I’ve seen firsthand how horse calming supplements, paired with proper care and training, can make a real difference.

Why Do Horses Need Calming Supplements? Understanding Equine Stress

Nervous horse showing stress loading in a trailer.
Horses often show stress during travel or unfamiliar situations.

Horses are highly sensitive animals, thanks to their survival-driven “flight” instinct. While this sensitivity aids their survival in the wild, it often leads to anxiety in modern environments, such as during transport or competitions. These stressors can significantly affect a horse’s health, behavior, and performance.

Calming supplements help manage these stress responses, making them a useful tool for horse owners.While calming supplements can help reduce anxiety, they should be part of a holistic care plan that includes proper training, nutrition, and environmental management.

Now that we’ve covered the types of supplements, let’s explore how to use them effectively to get the best results.

Types of Calming Supplements for Horses

Calming supplements fall into three main categories: herbal, nutritional, and pharmaceutical. The following table summarizes their key uses, benefits, and risks.

Type of SupplementKey IngredientsWhen to UseBenefitsRisks
HerbalChamomile, valerian root, passionflowerMild anxiety (travel, new environments)Natural, non-sedativeEffectiveness varies, potential allergies
NutritionalMagnesium, L-Tryptophan, B vitaminsChronic stress, daily maintenanceSupports neurotransmitter functionImbalances if overused
PharmaceuticalAcepromazine, prescription sedativesSevere anxiety (vet visits, intense stress)Effective in extreme casesSedation, must be used under vet supervision
Explore more about L-tryptophan and learn more about horse nutrition here.

Pro Tip: Always consult your veterinarian before starting any supplement. A vet can help you determine the best option based on your horse’s specific needs, ensuring safety and effectiveness.

Now that we’ve explored the different types of calming supplements and their uses, let’s look at real-life examples of how these supplements can effectively manage equine anxiety.

A horse calmly eating a calming supplement mixed with feed in a bucket.
Providing a calming supplement can help manage your horse’s stress and anxiety.

How I’ve Used Calming Supplements to Manage Equine Anxiety

Over the years, I’ve observed how targeted supplements, combined with a holistic care plan, can help manage equine anxiety. Here are a few examples:

Travel Anxiety
One of my Quarter Horses, whom I often hauled to barrel races, became visibly nervous during trips. Administering a magnesium-based supplement an hour before loading, alongside wrapping his legs and providing hay in a familiar net, eased his stress and made travel smoother. Learn practical tips to manage travel stress here.

Farrier Visits
My mare, Belle, would get anxious during shoeing, often kicking and pulling away from the farrier. Administering a calming supplement—an herbal blend—an hour before the farrier arrives has made a noticeable difference. It helps her remain calm, reducing resistance and making the process safer and more efficient for everyone involved.

Noise Sensitivity at Events
One of my Thoroughbreds, Corked, became jittery on race days due to loudspeakers and cheering crowds, losing focus and becoming difficult to handle. A nutritional calming supplement containing L-Tryptophan helped him stay calm, improving his focus in the warm-up ring and responsiveness to riding cues, which led to better performance on race days.

First Turnout in a New Paddock
After moving to a new facility, my two-year-old filly, Little Millie, was visibly uneasy during her first turnout. She paced nervously along the fence line and whinnied constantly for her stablemates. To ease the transition, I gave her a small dose of an herbal calming supplement containing chamomile and passionflower, about an hour before turning her out. The supplement took the edge off her anxiety, allowing her to calmly explore the paddock, grazing and interacting with her environment without overreacting.

a person walking a calm racehorse that was administered L-Tryptophan a horse calming supplements.
Walking a calm racehorse before heading to the starting gates.

Choosing the Right Calming Supplement for Your Horse’s Needs

With so many options available, selecting the right calming supplement for your horse can feel overwhelming. Here are some key factors to consider:

  • Understand Your Horse’s Needs: Identify whether your horse’s anxiety is situational (e.g., travel or competitions) or chronic. For situational anxiety, quick-acting pastes may work best, while daily powders or pellets suit ongoing stress.
  • Check the Ingredients: Look for specific ingredients like magnesium, L-Tryptophan, or herbal blends tailored to your horse’s behavior and tolerance.
  • Look for the NASC (National Animal Supplement Council) Quality Seal: This seal indicates that the product meets strict manufacturing and labeling standards, ensuring it has undergone rigorous quality checks and is free of harmful contaminants, reducing the risk of unsafe or ineffective ingredients. Look for this seal on product packaging or the manufacturer’s website to ensure your supplement meets the highest standards for safety and quality.
  • Consult Your Veterinarian: A vet can recommend supplements based on your horse’s weight, age, and health status.

Research shows that supplements containing citrus botanical oils, magnesium, and yeast can significantly reduce cortisol levels, aiding in stress management during events like trailering. Learn more here.

By carefully considering these factors, you can select a supplement that aligns with your horse’s specific needs and ensures both safety and effectiveness.

Key Ingredients in Horse Calming Supplements: How They Ease Stress

Understanding the key ingredients in calming supplements can help you select the right option for your horse’s specific needs. Here’s what stands out:

  1. Magnesium:
    Supports nerve function and relaxes muscles. It’s ideal for horses with chronic stress or muscle tension.
  2. L-Tryptophan:
    An amino acid that boosts serotonin levels to promote calmness. A study in the Journal of Animal Science highlights its effectiveness in reducing stress-related behaviors, making it an excellent choice for pre-event anxiety.
  3. Herbal Blends:
    Natural ingredients like chamomile and valerian root are effective for mild anxiety. They are best for horses adjusting to new environments or sensitive to noise, though results can vary.
Calm horse grazing in a green pasture.
Grazing supports natural behavior and reduces stress in horses.

Diet and Forage: The Key to Supporting Horse Calming Supplements

A healthy horse begins with a balanced diet. Calming supplements can support your horse, but they work best when paired with proper nutrition. Here’s how to lay the foundation:

High-Quality Hay:

Ensure your horse’s hay is free from mold, dust, and weeds. Good hay should have a fresh smell, green color, and a soft texture. Testing for nutrient content can help identify deficiencies and ensure your horse gets what it needs. I’ve had hay tested for my racehorses to ensure their diets meet performance demands, and the results helped me balance their nutrition effectively. Learn how to evaluate hay quality here.

Consistent Access to Forage:

Forage isn’t just about nutrition—it keeps your horse’s digestive system healthy and prevents stress-related conditions like ulcers. Grazing also mimics natural behavior, keeping your horse mentally and emotionally calm.

Balanced Nutritional Intake:

A well-fed horse is less likely to exhibit behavioral issues caused by nutrient deficiencies. For example, a horse lacking magnesium might show signs of nervousness, which can be addressed through both diet and supplements.

Pro Tip: Monitor your horse’s weight and coat condition to ensure their diet is meeting their needs. If you notice changes, consult with a veterinarian or equine nutritionist to adjust their feeding plan.

Close up of a farrier removing a horse's shoes from a calm horse.
Calming supplements can make farrier visits safer and more efficient.

Using Calming Supplements Effectively: Tips for Horse Owners

Calming supplements come in various forms, each with its own benefits and drawbacks. The table below details the benefits, drawbacks, and best use cases for powders, pastes, and pellets, making it easy to choose the right form for your horse.

FormBenefitsDrawbacksBest Use
PowdersEasy to mix into feed; ideal for daily useMay be avoided by picky eaters; can settle in feed if not mixed thoroughlyRegular maintenance and chronic anxiety
PastesPre-measured and portable; easy to administerCan be messy; requires direct handling; may be hard to dose if the horse resistsTravel or immediate stress situations
PelletsPalatable; blend well with regular feedSlower onset of effects; less suitable for immediate stress; not ideal for horses with dental issuesHorses sensitive to powdered supplements

Dosage Guidelines

The recommended dosage depends on factors such as your horse’s weight, age, and the stress level of the situation. For example:

  • Magnesium-based supplements: Suggested at 5–10 grams per day for a 1,000-pound horse.
  • L-Tryptophan: Typically ranges between 1–2 grams per dose, depending on the product.

Key Tips for Dosage:

  1. Start Small: Introduce a smaller dose to gauge your horse’s response before reaching the recommended amount.
  2. Consult Your Veterinarian: Always tailor dosages to your horse’s specific needs, especially for unique health conditions or sensitivities.
  3. Timing: Administer supplements at least 30 minutes to an hour before the stressful event for maximum effectiveness.

Pro Tip: Always introduce new supplements gradually and watch your horse for any adverse reactions. Consulting with a veterinarian can ensure the chosen supplement aligns with your horse’s health needs.

Horse eating high-quality green hay in a stable.
High-quality hay is a vital part of a horse’s diet and overall calmness.

Understanding Side Effects and Risks of Calming Supplements for Horses

While calming supplements are generally safe, they may cause side effects like drowsiness, digestive upset, or allergic reactions. Over-sedation can impair focus, while ingredient sensitivities could lead to colic or irritation. Always consult your veterinarian and introduce supplements gradually to monitor for adverse reactions.

How to Reduce Risks:

  • Start Slowly: Introduce new supplements gradually to monitor your horse’s response.
  • Track Symptoms: Keep a journal of your horse’s behavior, diet, and any noticeable changes after starting a supplement.
  • Consult Your Vet: Your veterinarian can assess your horse’s overall health and recommend the safest and most effective options. For example, they might suggest bloodwork to check nutrient levels before introducing a new supplement.

By staying vigilant and working closely with your vet, you can ensure that calming supplements enhance your horse’s well-being without unintended consequences. While supplements can address immediate stress, they work best when integrated into a broader care plan. Let’s explore additional strategies to maintain your horse’s calm and confidence.

Rider rubbing her horse on its mane in a close, relaxed interaction.
Desensitization training builds confidence and reduces anxiety.

Holistic Strategies to Keep Your Horse Calm and Confident

Calming supplements are most effective when paired with a comprehensive care plan. By addressing a horse’s physical and mental needs, you can create a calm, confident partner. Here are key strategies to incorporate into your routine:

  1. Training Techniques:
    Desensitization and positive reinforcement build confidence and reduce anxiety. For example, I had a horse that would spook at tarps. Using gradual desensitization, I introduced the tarp in a safe environment, rewarding calm behavior. Over time, his responses improved significantly. Pairing this process with a calming supplement can help take the edge off initial anxiety, allowing your horse to focus better during training.
    Explore training techniques here.
  2. Environmental Management:
    A secure, consistent environment minimizes stress. Loud machinery, sudden weather changes, or other disruptions can unsettle horses. Reducing such triggers, combined with calming supplements, helps create a stable, relaxing space.
  3. Routine and Consistency:
    Horses thrive on predictability. Feeding, turnout, and exercise schedules should remain steady to help your horse feel secure. Incorporating a supplement during transitions, such as the start of a busy competition season, can provide extra support while maintaining their routine.
  4. Regular Exercise:
    Physical activity channels nervous energy and maintains mental health. For example, lunging a horse before trailering can release excess energy, making travel less stressful. While exercise plays a significant role, a calming supplement can complement these efforts, particularly for horses prone to overreacting in new settings.

Pro Tip: Try pairing a calming supplement with desensitization training or a new routine to help your horse adjust more smoothly. Supplements can take the edge off anxiety, allowing these strategies to work more effectively.

Calm horse exploring a new paddock after taking herbal supplements.
Herbal supplements can help horses adjust to new environments.

FAQs: Answering Common Questions About Horse Calming Supplements

Are calming supplements safe for pregnant mares?

Some may not be suitable due to potential risks to the mare or foal. Always consult your veterinarian to determine safe options for pregnancy.

Can I use calming supplements daily?

Herbal and nutritional supplements are often safe for regular use. However, pharmaceutical supplements should only be used under veterinary guidance and in specific situations.

How do I know if a supplement is working?

Look for reduced anxiety-related behaviors like restlessness or excessive sweating. Keep a journal to track your horse’s responses over time and consult your vet for guidance.

What should I do if my horse has side effects?

Stop using the supplement immediately and consult your veterinarian. Gradually introducing supplements can minimize risks.

Horse owner consulting with a veterinarian in a stable.
Consult your veterinarian before starting any calming supplement.

Final Thoughts: Key Takeaways on Calming Supplements for Horses

Calming supplements can transform the way you manage your horse’s anxiety, but they’re just one piece of the puzzle. Pairing supplements with a balanced diet, consistent training, and a supportive environment is essential for long-term success.

Key Takeaways: Managing Horse Anxiety with Calming Supplements

  • Consult a veterinarian: Always discuss supplement options with your vet to ensure safety and effectiveness.
  • Choose the right type: Herbal supplements for mild anxiety, nutritional for chronic stress, and pharmaceutical for severe cases.
  • Combine with holistic care: Supplements work best alongside training, nutrition, and consistent routines.
  • Monitor your horse: Observe changes in behavior and adjust dosages as needed.
  • Look for quality assurance: Opt for products with the NASC Quality Seal to ensure safety and reliability.
  • Start gradually: Introduce supplements slowly to gauge your horse’s response and reduce the risk of adverse effects.

Your Turn:
Have you tried calming supplements? What worked (or didn’t work) for your horse? Share your experiences or questions in the comments to help others in the community!

Miles Henry

About the Author: Miles Henry

Miles Henry is a lifelong horseman with over 25 years of experience owning and training Thoroughbred racehorses. He shares expert insights from his personal experiences growing up with horses, including Quarter Horses and Appaloosas, and currently owns seven Thoroughbreds in training.

Learn more about Miles Henry