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Feeding Chart

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Feeding Chart
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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.
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Product Overview

Supports a healthy weight, muscle, immune function

EndurExtra was specifically developed for horses who need more than a diet of hay and grain can provide. EndurExtra’s special blend of ingredients supports a hearty appetite, a desirable body weight, a robust immune system, and healthy muscle function. EndurExtra’s concentrated blend of readily digestible fats is supplemented at the low rate of eight ounces per day. This formula contains 50% fat from several sources, including rice bran, soybean oil, and flaxseed, helping to eliminate the need for excessive grain in the diet. It also includes a proprietary blend of direct-fed microbials to help maintain normal digestive function, as well as natural vitamin E to support muscle, nerve, and immune health.

  • Provides a source of high-fat energy along with powerful antioxidants & direct-fed microbials
  • The perfect choice for hard keepers, top performance horses & seniors

Learn More

Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work

Supporting Success


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.

EndurExtra® is rated 4.0 out of 5 by 10.
Rated 1 out of 5 by from Lots of powder I was quite excited to use this for my older senior horse, when i got it and saw how much sand like powder he would have to eat twice a day, he did eat most of his meal so i added sweet feed to help still wasnt a fan. Wish i knew it was a very fine powder before buying.
Date published: 2021-04-06
Rated 5 out of 5 by from Good stuff! [This review was collected as part of a promotion.] It's working very well. I can see a difference after 2 weeks.
Date published: 2020-12-18
Rated 1 out of 5 by from Terrible Bought it for a specific horse who wouldn't eat it. So I figured OK, let me try it on another less picky horse. Nope. So then just to see I offered it to the one that eats everything. NOPE. Terrible. It's also a rather large portion of a dusty powder. Worst part is when I emailed Smartpak they basically told me to try molasses or another flavoring to mask the taste .. really? You want me to pour molasses on this powder and make a sticky ball of goo? I seriously doubt that would be any more appetizing. These horses don't need pure molasses poured on their feed, no thank you. I thought Smartpak stood behind their products but this was not the case.
Date published: 2020-07-09
Rated 5 out of 5 by from A powerful additive I recently moved states and one of my horses responded with a huge weight loss. I tried another guaranteed weight gain supplement x 6 weeks with only modest improvement (along her daily feed supplement). After using EndurExtra for a little over a month, I have seen massive gains--she is almost back to her pre-move weight. Very palatable, easy to feed, and well worth the investment.
Date published: 2019-09-02
Rated 5 out of 5 by from Great results for not a lot of investment My OTTB preliminary eventer has been on this for 6 months now and he has absolutely blossomed. I have gone down the route of other fat supplements before but, after using this for 6 months, certainly feel like this is the best bang for the buck. It isn't the cheapest, but with the direct fed microbials and vitamin E I feel it certainly has the best value.
Date published: 2019-01-08
Rated 5 out of 5 by from Best top dress This is the best supplemental fat and protien concentrate I have found. For years I mixed rice bran with countless other things bc nothing was comparative in a feed to get the desired ratios of fat and protien. Even then I still couldnt come close to what this offers me in a simple top dressing over my horses normal feed. Amazing results for both my 24 yr old quarter horse who needed weight and muscle mass as well as my 14 yr old thoroughbred who's weight is fine but just is in a lot of work so wanted to keep him in good flesh over the winter here in central Pennsylvania. Love it!
Date published: 2018-02-26
Rated 5 out of 5 by from Great high fat supplement to put weight on The nice thing about this product is you don't have to feed a ton of volume to get the fat in. Works nicely for the senior, hard-to-keep-weight on horse. Very palatable, but even if you add water and make a drench, it's still a lot in a small volume.
Date published: 2017-09-19
Rated 5 out of 5 by from Great product for my senior horse Great product to keep weight on my senior horse, and Kentucky Performance Products is a great company.
Date published: 2017-07-19
Rated 4 out of 5 by from good value supplement I bought this hoping it would help my OTTB keep weight on and I liked the added pro-biotic component to help his gut. He is not a fussy eater but he has enjoyed this in his food and he is in great condition
Date published: 2016-11-29
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