Performance Builder™


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Performance Builder™ promotes rapid, healthy muscle growth and development in horses of all ages including weanlings, yearlings, older horses, and pre-sale horses. Contains a balanced blend of gamma oryzanol, calcium HMB, l-leucine, methionine, and more to support muscle growth and overall well-being. Results can be seen in as little as 2-3 weeks.


There are a number of reasons why one would want to increase their horse’s muscle mass. From working horses that are competing or training to older or sick horses that are suffering from muscle loss, there are many instances where increasing muscle mass can be beneficial. Whatever the reason, many owners find themselves hoping to get their horses in better shape. The best way to achieve this goal is through proper diet, sufficient protein supplementation and exercise.

Amino acids are the building blocks of proteins. There are 22 amino acids responsible for the production of protein, and a horse is only able to synthesize 12 on its own. The other 10, known as essential amino acids, are collected through food intake. Without the presence of the essential amino acids, muscle production cannot occur because links in the chain are missing and proteins are unable to form. This makes proper nutrition vitally important for a horse’s muscle gain.

Performance Builder has the following benefits for your horse:

  • Gamma oryzanol, Calcium HMB, plant proteins, and amino acids (l-leucine and methionine) provide the nutritional support needed for lean muscle development
  • Contains five natural sources of plant protein: pea, spinach, carrot, kale, and beet
  • Works rapidly, increased physical appearance can be seen in as little as 2-3 weeks
  • Will not change your horse’s temperament or make your horse ‘hot’
  • Available in a tasty butterscotch flavor
  • Contains no anabolic steroids




Directions: For 1000lb horse, give one fluid ounce daily. Can be given before, during, or after meals. Horses can be started on this product as soon as they are weaned.

Additional information


30 oz, 1 Gallon, 5 Gallon


15 reviews for Performance Builder™

  1. Kiera Phlipot

    My horse didn’t eat his grain for a month because I tried to start him on a different supplement – picky eater doesn’t even begin to describe him! I started him on the Performance Builder while at a horse show, and he ate every kernel of food and licked the bowl clean! In the 3 weeks he’s been on the Performance Builder, he’s gained all the weight back he lost from the previous month and then some – all while at a horse show!! He’s finishing every meal & I can see a positive difference in how his topline is building. I couldn’t order more fast enough!!

  2. Kevin Shaw

    IT WORKS…How many supplements can you say that about? Couldn’t be more apparent . Just try it.

  3. Ashley Robinson

    We are working tirelessly to get it back in stock! Stay tuned and sign up for our emails to be alerted when it will return! Thanks for your itnerest!

  4. Danielle

    Love this stuff! My draft mix was losing his top line and muscle in his hind end. Within a month he has more muscle tone and has filled out a bit as well. True to the claims…it has not changed his temperament!

    • Ashley Robinson

      Thanks for sharing! WE LOVE THAT!

  5. Gene A.

    Great product! Worked wonders on our 18yo paint that hadn’t been worked in a few years. Not only did he muscle up, his coat shined up too. He looks and feels great!

  6. Gina Anderson

    This is an amazing product I use it on my racehorses and thought I would try it on my OTTB that is an extreme hard keeper and oh my goodness you would not believe how much he has progressed…..

  7. Chris Gray

    I train thoroughbred racehorses. I started my 6 year old thoroughbred on Finish Line Performance Builder 45 days ago. The difference is absolutely amazing! More stamina training and swimming. Definition in muscle mass and tone. He has finally turn the corner in his training. Very impressed with the overall focus and attitude he has now. If you feel your missing something in your training and feed regime add this product. Definitely a must have in any racing or performance stable.

  8. Tena Ladner

    Loving over all results. An ease of feeding with other finishline products!

  9. Leah Arledge

    We are giving this product to our 27 y/o Quarter Horse Stallion War Cal. It has made a huge positive difference in his appearance and his energy level. Hence I ordered an additional supply after the “free “ trial product.

  10. Leah Arledge

    Delivered fast. Corrected the invoice to credit the farm tax. Working good on our 28 y/o stallion.

  11. Shawn Garland

    I was sent a sample and asked to try it. I was quite skeptical as not usually a believer that this type of supplement could make a difference. I was wrong! What a tremendous difference in my horse. He looks amazing! I am extremely happy with this product. So much so that I put more than half of my barn on it!! Not only do my horses look amazing but they’re healthy happy and feeling great. I could not try it when sent as was winter and downtime but now with spring I gave it a skeptical shot. Glad I did!! Try it and turn yourself into a believer.

  12. Cheyenne Davis

    In one month, I have seen a difference in my gelding. Over the course of the 2020/2021 winter, he was ill with ulcers and a heaves flare up that left him 200 pounds lighter. He gained some back over the summer, but has absolutely blossomed over the last month with this supplement.

  13. Sam

    Started this product as a nothing could hurt. Really like it bought a small bottle and almost done with it. My mare looks amazing and building back her top line nicely

  14. Krista Williams

    AMAZING PRODUCT! Had a horse lose 300lbs die yo ulcers . With the help of U7 and this product we had him looking back to normal in 6 months.

  15. Linda Kern

    Ok, THIS is a product that will blow you away with results and QUICKLY!! I noticed a big difference in just two or three weeks. The muscle definition was the first thing I noticed, then his top-line and his ability to recover after working him out. I was not the only one who noticed, the people in my barn also started making comments and I gave all the credit to Performance Builder. The biggest bonus was that he lapped it up like candy and begged for more…haha I absolutely LOVE this product and so does Winston!!!!

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