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Putting your horse's supplements on AutoShip helps you take great care of your horse, so we take great care of you with SmartPerks! When you order your horse's supplements on AutoShip, you're automatically* eligible for our FREE SmartPerks benefits, including:
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Choose AutoShip to become eligible to apply for the FREE Colicare Program after checkout.

ColiCare is a FREE veterinarian-directed wellness program that provides enrolled horses with up to $10,000 of colic surgery reimbursement.

How Does it Work?

  1. Order any ColiCare Eligible Product in SmartPaks
  2. Fill out the quick application online- no paperwork required!
  3. Complete the Annual Wellness Requirements every year:
  • Physical exam performed by your vet
  • Dental exam performed by your vet
  • Vaccinations administered by your vet
  • Deworming program developed with your vet that includes at least one fecal test and two deworming administrations per year

Provided you meet the requirements above, if your horse undergoes any type of colic surgery, you'll be eligible for up to $10,000 of reimbursement.

Learn More »
  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
Please call 1-800-461-8898 to order this product.
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  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
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Feeding Chart

Daily Serving

Dog Weight - lbs Inactive Dog Active Dog Working Dog
-
Inactive Dog - Less than 30 minutes of vigorous exercise daily
Active Dog - At least 30 minutes of vigorous exercise daily
Working Dog - More than two hours of vigorous exercise daily
This is only a guide. Please consult your veterinarian to determine the perfect feeding amount for your dog.
( Cups / Meal)
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Maintenance dose

You're eligible to apply for our FREE ColiCare Program after checkout.

ColiCare is a FREE veterinarian-directed wellness program that provides enrolled horses with up to $10,000 of colic surgery reimbursement.

How Does it Work?

  1. Order any ColiCare Eligible Product in SmartPaks
  2. Fill out the quick application online- no paperwork required!
  3. Complete the Annual Wellness Requirements every year:
  • Physical exam performed by your vet
  • Dental exam performed by your vet
  • Vaccinations administered by your vet
  • Deworming program developed with your vet that includes at least one fecal test and two deworming administrations per year

Provided you meet the requirements above, if your horse undergoes any type of colic surgery, you'll be eligible for up to $10,000 of reimbursement.

Learn More »
  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
Please call 1-800-461-8898 to order this product.
New ship same day!
These are for:
Sign in to choose an existing
  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
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+
Order within and
have it by
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Supports a healthy nervous system & muscles

  • Provides 5,000 mg of magnesium
This formula provides 5,000 mg of magnesium in tasty pellets that horses love!

100% Happiness
Guarantee
HappinessGuarantee
At SmartPak, your happiness is at the core of everything we do. We back every order with our 100% Happiness Guarantee so that you can shop with confidence. If you're ever less than thrilled with your purchase, just let us know and we'll refund you right away. No hassles, no hoops, no kidding.

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The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

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Ingredients

(Maintenance Dose = )
Ingredient Per Serving Per Pound
How the Ingredients Work
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Instructions

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    Reviews

    Magnesium 5,000 is rated 4.7 out of 5 by 275.
    Rated 5 out of 5 by from Easy to feed I bought this a month ago and can already see the difference in my mare
    Date published: 2019-09-20
    Rated 5 out of 5 by from Great Bought this for my TB with kidney problems who can't have much sugar in his diet. Has helped keep his magnesium levels good, and have definitely noticed a change in how much better he feels. He loves the taste as well! The only problem is I bought the 10 pound bag and found the bag's quality not to be great, had to move the supplement to a container.
    Date published: 2019-09-19
    Rated 5 out of 5 by from Palatable and affordable Best value for the money and my horse has no issues eating it. Definitely seems to help him!
    Date published: 2019-09-18
    Rated 4 out of 5 by from Different kind of Reaction I bought this for my hunter who struggles with anxiety, and my jumper who has a bit of a careful peek at the jumps. The hunter refused to eat it, and actually refused to eat anything for a few weeks after because he hated it so much (not a complete unusual reaction from him). It has a distinct smell I don't even particularly care for. The jumper eats is right up, but I wouldn't say its taken his peek away. I have seen a difference in his hair & hoof growth since he's been on this supplement. I'm on the fence about continuing with him since I don't think its actually improving his quietness level, but it's clearly helping his hair & hooves.
    Date published: 2019-08-05
    Rated 5 out of 5 by from Love this! Great product. My horse seems more relaxed almost instantly! When I ran out i was able to notice the true difference in my horses attitude. Just ordered more, so happy it helps and my horse ate it all up!
    Date published: 2019-07-17
    Rated 5 out of 5 by from I can tell a difference My horse has been on this supplement for about a month and I feel like I can already tell a difference in his demeanor. He’s much less anxious and it has made training much easier.
    Date published: 2019-06-20
    Rated 5 out of 5 by from I think it works I have a mare with very tight muscles. This seems to be making her more level headed and less reactive. I am ordering more!
    Date published: 2019-06-06
    Rated 5 out of 5 by from Mag 5000 Horse is so much more relaxed since starting this supplement....and he eats it !
    Date published: 2019-05-30
    Rated 5 out of 5 by from Great value My typically calm OTTB started to show some signs of stress and nervousness. I started him on this and I've seen a huge improvement- he's back to his calm, cool, collected self. Great value.
    Date published: 2019-05-22
    Rated 5 out of 5 by from My experienced endurance horse had been getting very difficult to handle the last couple of months-bucking, running through the bit, bolting. On a hunch I started her on a double dose of magnesium 10 days ago. For our ride today she was back to normal-14 miles alone trotting and cantering on a loose rein with only a single little spook in place. Magnesium won't fix crazy if a deficiency isn't the underlying problem, but this is an easy and effective diagnostic and solution.
    Date published: 2019-03-20
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