Best Horse Calming Supplements 2026: According to Reviews | Chewy

Best Calming Supplements For Horses

Horses can experience stress during travel, training, competitions, changes in routine, or other unfamiliar situations. Calming supplements are often used as part of a broader management approach to help support focus and relaxation in certain horses. Because every horse responds differently, it is important to work with your veterinarian before adding supplements to your horse's routine, especially for ongoing behavioral or health concerns.

Our Top Picks

How we created this horse calming supplement list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best horse calming supplement.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best horse calming supplements.

Key horse calming supplement considerations

Dosage and Administration

Effectiveness

Ingredients

Long-Term Effects

1
Kentucky Performance Products Elevate Maintenance Powder Vitamin E Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Maintenance Powder Vitamin E Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Maintenance Powder Vitamin E Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Maintenance Powder Vitamin E Horse Supplement, 2-lb jar

Kentucky Performance Products Elevate Maintenance Powder Vitamin E Horse Supplement, 2-lb jar

Rated 4.8 out of 5 stars
511
$51.84 Chewy Price
($0.40/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.6/5
Excellent

Effectiveness

4.7/5
Excellent

Ingredients

4.7/5
Excellent

Long-Term Effects

4.5/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

D-Alpha-Tocopheryl Acetate (Natural Vitamin E), And Dextrose

Farm Animal Type

Horse

Food Form

Supplement
2
Kentucky Equine Research Nano-E Antioxidant Liquid Horse Supplement, 15-fl oz bottle
Kentucky Equine Research Nano-E Antioxidant Liquid Horse Supplement, 15-fl oz bottle
Kentucky Equine Research Nano-E Antioxidant Liquid Horse Supplement, 15-fl oz bottle

Kentucky Equine Research Nano-E Antioxidant Liquid Horse Supplement, 15-fl oz bottle

Rated 4.7 out of 5 stars
191
$90.20 Chewy Price
($0.85/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.6/5
Excellent

Effectiveness

4.6/5
Excellent

Ingredients

4.7/5
Excellent

Long-Term Effects

4.5/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Water, Vitamin E (D-Alpha Tocopherol), Lecithin, Polysorbate 80, Citric Acid

Food Flavor

Unflavored

Farm Animal Type

Horse
3
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag
Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag

Formula 707 Calming Apple Flavor Pellets Horse Supplement, 5-lb bag

Rated 4.5 out of 5 stars
370
$46.46 Chewy Price
($1.17/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.5/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.4/5
Great

Long-Term Effects

4.4/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Active Ingredients: Magnesium, Thiamine, L-Tryptophan., Inactive Ingredients: Rice Bran, Wheat Midds

Special Diet

Hydrolyzed Protein

Food Flavor

Apple, Fruits & Vegetables
4
Mad Barn Magnesium Oxide Muscle Relaxation & Nerves Horse Powder Supplement, 11-lb bucket
Mad Barn Magnesium Oxide Muscle Relaxation & Nerves Horse Powder Supplement, 11-lb bucket
Mad Barn Magnesium Oxide Muscle Relaxation & Nerves Horse Powder Supplement, 11-lb bucket

Mad Barn Magnesium Oxide Muscle Relaxation & Nerves Horse Powder Supplement, 11-lb bucket

Rated 4.9 out of 5 stars
58
$36.99 Chewy Price
($0.22/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.7/5
Excellent

Effectiveness

4.8/5
Excellent

Ingredients

4.8/5
Excellent

Long-Term Effects

4.6/5
Excellent

Is this horse calming supplement right for my pet?

Top Ingredient

Magnesium

Special Diet

Low NSC

Farm Animal Type

Horse

Food Form

Powder
5
Foxden Equine Quiessence Pellet Horse Supplement, 5-lb bag
Foxden Equine Quiessence Pellet Horse Supplement, 5-lb bag
Foxden Equine Quiessence Pellet Horse Supplement, 5-lb bag

Foxden Equine Quiessence Pellet Horse Supplement, 5-lb bag

Rated 4.7 out of 5 stars
92
$29.95 Chewy Price
($5.99/lb)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.5/5
Great

Effectiveness

4.6/5
Excellent

Ingredients

4.4/5
Great

Long-Term Effects

4.4/5
Great

Is this horse calming supplement right for my pet?

Top Ingredients

Active Ingredients: Magnesium Oxide, Magnesium Proteinate, Chromium Propionate. Inactive Ingredients: Artificial Banana Flavoring, Distillers Grains, Ligno Sulfonate

Special Diet

Low NSC

Food Flavor

Banana

Farm Animal Type

Horse
6
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub
AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub

AniMed Via-Calm Calming Powder Horse Supplement, 2-lb tub

Rated 4.6 out of 5 stars
195
$18.24 Chewy Price
($0.29/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.4/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.5/5
Great

Long-Term Effects

4.4/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

L-Tryptophan 1000 mg, Thiamine 500 mg, Calcium 227 mg, Magnesium 142 mg., L-tryptophan

Special Diet

Natural

Farm Animal Type

Horse
7
Kentucky Performance Products Elevate Se Vitamin E & Selenium Powder Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Se Vitamin E & Selenium Powder Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Se Vitamin E & Selenium Powder Horse Supplement, 2-lb jar
Kentucky Performance Products Elevate Se Vitamin E & Selenium Powder Horse Supplement, 2-lb jar

Kentucky Performance Products Elevate Se Vitamin E & Selenium Powder Horse Supplement, 2-lb jar

Rated 4.8 out of 5 stars
140
$66.99 Chewy Price
($0.52/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.5/5
Great

Effectiveness

4.6/5
Excellent

Ingredients

4.5/5
Great

Long-Term Effects

4.4/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Vitamin E, Selenium

Farm Animal Type

Horse

Food Form

Supplement
8
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag
SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag

SmartPak SmartSupplements SmartCalm Ultra Pellet Horse Calming Supplement, 7.5-lb bag

Rated 4.6 out of 5 stars
39
$67.32 Chewy Price
($1.19/serving)
Promo, Save 40% today with Autoship

Our ratings

Dosage and Administration

4.5/5
Great

Effectiveness

4.7/5
Excellent

Ingredients

4.5/5
Great

Long-Term Effects

4.5/5
Great

Is this horse calming supplement right for my pet?

Top Ingredients

Inactive Ingredients: Alfalfa Meal, Artificial Flavor, Beet Pulp, Corn Distillers Dried Grains with Solubles, Grape Pomace (Ground Grape Seed and Skin)

Special Diet

Sugar Free, Grain-Free

Farm Animal Type

Horse

Food Form

Supplement
9
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub
Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub

Farnam Quietex Focusing & Calming Hay Flavor Pellets Horse Supplement, 1.62-lb tub

Rated 4.5 out of 5 stars
70
$31.71 Chewy Price
($1.22/serving)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Dosage and Administration

4.6/5
Excellent

Effectiveness

4.5/5
Great

Ingredients

3.9/5
Good

Long-Term Effects

4.5/5
Great

Is this horse calming supplement right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Corn Starch, Glucose, Glycerin, Malt Syrup, Maltodextrins

Food Flavor

Hay

Farm Animal Type

Horse
10
SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings
SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings
SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings
SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings
SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings

SynNutra Equine SynChill Daily Calming Pellets Horse Supplement, 120 Servings

Rated 4.4 out of 5 stars
38
$348.00 Chewy Price
($2.90/ea)
Promo, Save 40% today with Autoship

Our ratings

Dosage and Administration

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.4/5
Great

Long-Term Effects

4.4/5
Great

Is this horse calming supplement right for my pet?

Top Ingredients

Alfalfa Meal, Molasses, Equience

Special Diet

Gluten Free, Plant Based, Human-Grade, Natural...

Food Flavor

Hay, Molasses

Farm Animal Type

Horse