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SmartMuscle® Mass Pellets

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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.
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Product Overview

Which horses benefit from muscle building support?

Every horse owner wants their partner to have strong, healthy muscles to power performance; whether that means jumping the course, winning the halter class, or hitting the trail. Supplements in this category provide the building blocks needed for lean muscle development and are a great way to ensure your horse your horse has the right nutritional support to make the most of his exercise program.

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Key Ingredients


Supplement Facts

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Ingredient Name Amount Per Pound

Ingredient Details


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How the Ingredients Work


Supporting Success

Supercharge Your Supplements

  • Christine McCrea and Tim McQuay on SmartMuscle Mass Equine Supplement
    Team SmartPak Riders, Christine McCrea and Tim McQuay, talk about why they trust the health of their top horses to SmartMuscle Mass ( Want your horse to be powered by SmartSupplements, too? Order today at
  • Simplify with SmartPaks | Consistent, Custom, Convenient
    Simplify your life with SmartPaks: custom-made, pre-measured daily doses of your horse's supplements.


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.

SmartMuscle® Mass Pellets is rated 4.5 out of 5 by 355.
Rated 5 out of 5 by from Fast results for topline and filling out hind qtrs Purchased this product for our 23 yr old qtr type mare, she isnt used very often and came out of MN winter with little to no muscle tone, especially being older she was becoming older horse syndrome of possible cushings with larger belly and low top line. She is and was wormed regularly so worms were not the problem with riding her litely once a week in the summer for 1/2 hr and proper feed and SMARTPAK muscle mass she really filled out nicely. I use SMARTPAK OFTEN on my other horse for her joints I do feel the supplements are indeed beneficial. However a bit spending, but adds tremendous results on most of the products I have used including the Muscle Mass for our mare we dont hardly ride regularly.
Date published: 2021-11-10
Rated 5 out of 5 by from Really Helps the Muscles! I have a 12-year-old miniature gelding I was given a year ago. When he came to me I adjusted his nutrition and feed program to help him put on weight and muscle. In a month I started seeing the difference SmartMuscle Mass was making. In eight months this pony went from no topline and a bloated belly, to looking like a horse ready for a halter class with a beautiful topline. I just recently added this to my 24-year-old mare’s Smartpaks and in 30 days definitely see it giving her topline muscles the nutritional support they needed. For forage both horses are on coastal-grass pasture during the day (with grazing muzzles) and fed alfalfa and alfalfa/orchard grass hay in slow-feed nets when in their sheltered paddock at night. My horses only receive their forage and Smartpak supplements. They are not fed any other type of grain, oats, or bran products.
Date published: 2021-10-24
Rated 5 out of 5 by from Amazing Topline Results I had my pony, Pumpkin, leased out for a few months. Unfortunately, when he came back he was lacking muscle. He had lost a lot of muscle on his topline and hind end. I wasn't sure if it was from a lack of vitamins and minerals or because he is now getting some age on him. I was very concerned. I didn't want to feed him more feed and have him gain weight and form laminitis. He has always been an easy keeper. So easy that when he was previously home, he wore a grazing muzzle. I figured the best thing to do is support his muscle development. My vet recommended that I use a supplement with amino acids and Gamma Oryzanol. SmartMuscle® Mass Pellets fit the bill. I try to be cautious about loading my small pony up on supplements that he doesn't need. Since he has been on SmartMuscle® Mass Pellets, 3 months now, he looks dramatically better. I definitely recommend this as something simple to add to a horse's diet. What a difference a few months make! I will continue to use this product and would recommend it. It is a great product for putting muscle weight on some horses. Pumpkin benefited from SmartMuscle Mass, his chest is more muscular as are his hind quarters, topline, and neck. It's an amazing product!
Date published: 2021-10-13
Rated 5 out of 5 by from Incredible product for building topline I put my horse on this every year, around the time when summer transitions to fall. My horse is older and suffers from a mild case of shivers, which makes it difficult to put muscle back on him when he leans out, as the grass dies out in the fall every year in New England. This product gives him the exact boost he needs to get through, and really helped him out this year, when he got very lean quickly. Just over a month later and you can see the results. His coat is shiny, he has plenty of energy, and his muscling looks great again. Definitely a go-to of mine every year.
Date published: 2021-09-12
Rated 1 out of 5 by from No difference My gelding is on his second month of this supplement and I've not noticed a difference in his muscling/weight unfortunately. He's in 5 day a week work and I wanted to help him with muscle gain as he's a long bodied guy, plus no hills in NC. He eats it with no issue at least. Will not continue after this month is used up!
Date published: 2021-08-25
Rated 5 out of 5 by from Working already! I have been tweaking my OTTBs diet since I got him about 18 mos ago and he’s been slowly putting in condition and muscle. But a vet friend mentioned that she liked this supplement so I started him on it about 7wks ago. It seems like he’s already filling out even more very quickly! It’s the only thing I’ve changed recently and he’s actually getting a little less work lately, if anything, due to the very hot summer weather lately. So far I’m pretty impressed!
Date published: 2021-08-16
Rated 5 out of 5 by from Seeing results after 3 weeks! I was having some trouble building a top line on my ottb so I decided to add this to his supplements . I sure am happy I did. He is less sore overall after workouts and really showing improvement In His top line! can’t wait to see him in six months !
Date published: 2021-07-09
Rated 4 out of 5 by from Great product. Bought this a month ago and love it. I’ve seen some muscle gain on my horse and she is looking fabulous. Loved they they give you a tote for storage for it. I like the concept of having thing pre-measured, don’t care for the way it’s packaged with plastic, ends up with a lot of plastic waste. Overall it’s been a good product.
Date published: 2021-06-11
Rated 5 out of 5 by from I Bought this product to rebuild my horse's muscle mass. He had contracted a viral infection when I went to Arizona to rope. I nearly lost him but he recovered and had significant weight loss. Muscle mass is returning. I plan to continue using this product for a while.
Date published: 2021-05-27
Rated 5 out of 5 by from Really works fast We are 60 days into using SmartMuscle Mass Pellets in addition to the SmartCombo Ultra pellets (which he has been on about 6 months). The photo on the top was immediately prior to starting any Smartpak supplements. This horse was adopted as a retired TB racehorse at age 7. He lost a lot of weight and muscle quickly during initial transition into his new lifestyle. When I added the Smart muscle to his supplement plan 2 months ago, he started gaining muscle right away! His overall soreness is improved and his weight gain has been amazing. He is still only about 70% where I want him, but oh em gee he is looking pretty handsome already!
Date published: 2021-04-07
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