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Choosing the Right Calming Supplement

I have a spooky Arabian/National Showhorse mare. She is very sweet and quiet on the ground, but under saddle she is inclined to be nervous. She has only bolted once, but she spooks often. I’m 58 years old and just want to walk and trot her on trail rides. Is there a safe daily supplement that I can give her to help calm her? She is 21 years old and in very good condition. EC, Florida


I have a horse that was once a stallion and is still very dominant and pushy. I had him on Quiessence and that worked okay but not as well as I would have liked. My horse is pretty spooky and is very nervous outside where if he gets scared, he bolts and then stays very tense. I was just wondering if Quiessence is the best supplement to have him on or should I try something else? I still need him to have energy to perform upper level Dressage but is there anything I can put him on to take the edge off? NT, Colorado

Dear EC, KA and NT,

Before I recommend a calming supplement to any of you, my first piece of advice is: review your horse’s management and see if there is anything you can do to improve the situation. For example, is your horse on appropriate nutrition? (plenty of forage, grain replaced by a multi-vitamin/mineral supplement or ration balancer, salt and water). Next, does your horse have plenty of turnout that includes interaction with other horses? (24/7 is ideal, 8-12 hours is good, 4-6 hours is okay, less than that might be a problem).

If you have these basics covered, then it may be time to try a calming supplement. As you probably know from looking through the products, there are herbal ingredients and non-herbal ingredients. The herbal ingredients are things like chamomile, hops, valerian and vervain, all considered “nervines” because they are herbs with specific actions on the nervous system. What is particularly interesting about these four herbs is that they are each believed to work best on a certain type of nervous horse.

Chamomile: for horses that process anxiety through their GI system (colic, diarrhea)
Hops: for horses that process anxiety through their head (unfocused, distracted)
Valerian: for horses that process anxiety through their muscles (tight, also teeth-grind)
Vervain: for horses that process anxiety through their skin (twitchy, jumpy, fidgety)

You may also see the herb passionflower in some herbal calming products. It is believed to complement the nervines by facilitating their effect. The principle of using herbs to calm a horse has to do with rebalancing, re-educating or resetting the nervous system. Passionflower is said to be especially helpful in breaking old nervous system patterns and allowing new ones to be set. Therefore, horses that respond to one or more calming herbs may not necessarily need to be on them for life, although some may. Most horses can be taken off the calming herb after improvement is seen and need only go back on it during particularly stressful events such as a change in barns or owners.

Non-herbal ingredients are a different story. In general, non-herbal calming ingredients (such as Vitamin B-1, Magnesium and Taurine, an amino acid) are believed to work in some nervous horses because they have a dietary deficiency in those nutrients. Other ingredients may augment the amount of one of the body’s natural calming compounds, serotonin, a neurotransmitter whose brain levels are known to be a factor in anxiety. Inositol (a B-vitamin), participates in the action of serotonin, while tryptophan (an amino acid), is actually converted into serotonin, whose action in the body is to calm, soothe and produce feelings of contentment.

One final word of advice: if you are competing with your horse, make sure you know your association’s rules for what ingredients you can and cannot give your horse. Otherwise, review the way your horse is currently managed then try one or more of the ingredients above to see if your horse responds. Be sure and give each product at least four weeks to produce an effect, and if one product or ingredient doesn’t work, try another! Every horse is an individual and will respond differently to supplements for calming.

Lydia F. Gray, DVM, MA SmartPak Staff Veterinarian and Medical Director Dr. Lydia Gray has earned a Bachelor of Science in agriculture, a Doctor of Veterinary Medicine (DVM), and a Master of Arts focusing on interpersonal and organizational communication. After “retiring” from private practice, she put her experience and education to work as the American Association of Equine Practitioner’s first-ever Director of Owner Education. Dr. Gray continues to provide health and nutrition information to horse owners through her position at SmartPak, through publication in more than a dozen general and trade publications, and through presentations around the country. She is the very proud owner of a Trakehner named Newman that she actively competes with in dressage and combined driving. In addition to memberships in the USDF and USEF, Dr. Gray is also a member of the Illinois Dressage and Combined Training Association (IDCTA). She is a USDF “L” Program Graduate and is currently working on her Bronze Medal. Find Dr. Gray on Google+

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4 comments on “Choosing the Right Calming Supplement
  1. Jodi says:

    Very interesting! I am currently using Smart Calm Ultra and have been for about 4 months. I have a 17.1 Quarter Horse that has ulcers and gets very anxious. He also paces so much it angers people on the nearby golf course! I noticed a difference but just the past week he started losing weight again and started up with his pacing… even in his huge pasture that runs along side the Alabama river. We have had no change or even any showing that could have triggered any nervous behavior and I thought this was pretty odd. I am going to give the supplement one more month and then possibly switch to an herbal based supplement due to it probably being caused by his on and off again ulcers.

  2. Elizabeth Netemeyer says:

    I’m feeding SmartCalm Ulta to my 1,700 lb. Friesian. Considering his size, is one scoop a day adequate? He seems somewhat calmer, but is still nervous under saddle and during long-lining. Is there something else I should try? He has no health or physiological issues and he’s turned out everyday for 12+ hours Thanks for your response.

  3. Jan Peterson says:

    Smart Calm Ultra is not working at all on my Arabian filly. She won’t eat her feed with the herbal calmative. There must be something more effective, but haven’t found it.

  4. Savanna Bachand says:

    I have a tb stallion doing medium level dressage. He is a bully, enjoys being naughty, arrogant, sensitive and sharp. On the plus he is very trainable, athletic and finds everything easy and thrives on work. I need to find something that will mellow the stallion side. Thank you.

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