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Calm-ESE by Kingdom Nutrition Company — Health (A natural source of magnesium, Vitamin B-1 and inositol that settles nervous…)

Calm-ESE by Kingdom Nutrition Company

A natural source of magnesium, Vitamin B-1 and inositol that settles nervous horses without dulling their focus or energy.

Got a nervous performance horse, cribber, or stall weaver who needs natural calming?

Reviewed by Ann Pruitt, InfoHorse.com · Updated May 2026
Calm-ESE equine calming powder bucket from Kingdom Nutrition Company set outdoors against green cedar
Calm-ESE equine calming powder bucket from Kingdom Nutrition Company set outdoors against green cedar

Calm-ESE by Kingdom Nutrition Company is an all-natural equine calming supplement built around a single source of magnesium, Vitamin B-1 (thiamine) and inositol for the horse. It is formulated to settle nervous, anxious horses while letting them keep the energy and focus they need to perform — a calming effect for horses that are weavers, stall walkers, cribbers and others that show anxious behaviors. Calm-ESE comes in two forms: an 8 lb daily-feed powder ($120.00) that tops two-month supply per bucket, and a fast-acting oral paste ($20.00 per tube) for events. You can order either form directly from Kingdom Nutrition Company at kingdomnutritioncompany.com, where shipping is free.

Calm-ESE oral paste syringe by Kingdom Nutrition Company shown beside its box and yellow spring flowers
Calm-ESE oral paste syringe by Kingdom Nutrition Company shown beside its box and yellow spring flowers

What Is Calm-ESE?

Calm-ESE is described by Kingdom Nutrition Company as a complete natural supplement that has been proven to calm a horse, enabling them to harness their energy and save it for the event. The company calls it the best source of magnesium, thiamine (Vitamin B-1) and inositol for horses. Inositol helps improve insulin function and helps lower blood pressure, and combined with magnesium and Vitamin B-1 it helps horses feel better and calmer — without losing focus or energy. Like every Kingdom Nutrition product, Calm-ESE is “test free,” meaning it is designed to help performance horses keep their energy, focus and calm during competition or stressful situations without affecting performance testing.

Eight-pound bucket of Calm-ESE equine calming powder showing the Kingdom Nutrition crown label and guaranteed analysis
Eight-pound bucket of Calm-ESE equine calming powder showing the Kingdom Nutrition crown label and guaranteed analysis

What Are the Benefits?

According to Kingdom Nutrition Company, Calm-ESE has been proven to calm a horse in three to seven days, enabling the horse to harness his or her energy and focus on the task at hand. It is meant to take the edge off without dulling the horse — the calm comes with focus and energy, not at the expense of them. The company notes it is particularly effective for nervous fillies and mares, while being beneficial across breeds and disciplines. Calm-ESE is intended to help horses cope and stay settled through unfamiliar environments, travel, competition and other stressful situations, and to ease the chronic anxious habits — weaving, stall walking, cribbing — that frustrate so many owners. Kingdom Nutrition Company stands behind the product with an unconditional refund guarantee if you are not satisfied.

What's In It and Where Do I Buy?

The Calm-ESE powder guarantees, per ounce, 4,000 mg of magnesium, 1,000 mg of thiamine (Vitamin B-1) and 1,000 mg of inositol; its ingredients are yeast culture, magnesium oxide, alfalfa meal, thiamine mononitrate, inositol, soybean oil, natural & artificial flavor and mixed tocopherols as a preservative. Feed one to two ounces per head per day — ideally one ounce top-dressed over the morning feed and one over the evening feed — with the enclosed scoop holding one level ounce. The 8 lb bucket ($120.00) is a two-month supply. The Calm-ESE paste delivers a stronger per-dose punch (8,000 mg magnesium, 2,000 mg Vitamin B-1 and 2,000 mg inositol per 60 g syringe): give one tube 48 hours before an event and one tube 24 hours before. Paste is $20.00 per tube, and a box of 12 tubes includes two free (a $40 saving). Order both forms directly from Kingdom Nutrition Company at kingdomnutritioncompany.com, with free shipping on all products.

Calm, settled horses resting at their stall doors in a quiet barn aisle
Calm, settled horses resting at their stall doors in a quiet barn aisle
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The Solution Section (FAQ)
How long does Calm-ESE take to work?

Kingdom Nutrition Company states that Calm-ESE has been proven to calm a horse in three to seven days of daily feeding, settling the horse while letting it keep its energy and focus.

Will Calm-ESE make my horse dull or sluggish?

No. The company emphasizes that Calm-ESE helps a horse feel calmer without losing focus or energy — it is built to harness a nervous horse's energy and save it for the event rather than sedate the animal.

What is actually in Calm-ESE?

It is a source of magnesium, Vitamin B-1 (thiamine) and inositol. The powder also contains yeast culture, magnesium oxide, alfalfa meal, thiamine mononitrate, inositol, soybean oil, natural & artificial flavor and mixed tocopherols as a preservative.

How do I feed the Calm-ESE powder?

Feed one to two ounces per head per day — ideally one ounce top-dressed over the morning feed and one ounce over the evening feed. The enclosed scoop holds one level ounce, and the 8 lb bucket is a two-month supply.

When should I use the Calm-ESE paste instead of the powder?

The paste is the fast-acting, event-ready form. Give one tube 48 hours before an event and one tube 24 hours before, on top of or in place of the daily powder for added support around stressful situations.

Is Calm-ESE safe for performance and competition horses?

Yes. Like all Kingdom Nutrition products, Calm-ESE is “test free,” designed to help performance horses stay calm and focused during competition or stressful situations.

Which horses benefit most from Calm-ESE?

The company notes it is particularly effective for nervous fillies and mares, and helpful for horses that are weavers, stall walkers, cribbers or that show other anxious behaviors — while being beneficial across breeds and disciplines.

Who makes Calm-ESE?

Calm-ESE is made by Kingdom Nutrition Company, founded by Justin Sallusto Sr., who has been in the equine nutrition business since 1985 and previously founded Vita Flex Nutrition Company. The product is offered with free shipping and an unconditional refund guarantee.

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Ann Pruitt
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InfoHorse.com