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Muscle Fuel®

Accelerate muscle growth and limit exercise induced damage

15 reviews. 4.9 / 5
Sara - 07/02/2024 13:08
The horse I have put on this muscle builder has had a lot of physio and had under developed in hind quarters. I have returned to use this for a large second order as the horse built muscle where it was needed. The physio said she was very impressed.
Lucy - 28/09/2023 15:50
Muscle Fuel has really helped my young horses develop and fill out. Without it, my horses wouldn't be able to perform as well as they do.
Saxby - 15/03/2023 19:57
Product really good for my boy with is muscle problems
Susan - 22/02/2023 16:10
Happy to recommend to my friends
Sally - 05/10/2021 21:15
We have been using muscle fuel for a while now. We find it is vital to the development of young horses as it helps them put on muscle bulk to aid performance.
Lorraine - 15/07/2021 10:13
It does what it says on the package!!!
Sally - 17/06/2021 15:25
Another product from feedmark that does what it says on the tin. Our 7yrs event horse is continuing to building muscle and recovering well from the increased demands of 3*
Trusted Feefo Customer - 03/05/2021 08:38
only just started using too early to see results
Kimberly - 21/10/2020 11:35
very good and effective, it gives energy to the horse.
Trusted Feefo Customer - 19/10/2020 21:38
Brilliant product. My horse's topline has never looked so good.

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Nutrition Information

Muscle Fuel® helps to develop muscle mass as well as support muscle recovery and lactic acid recycling which is essential for performance horses. This effective formulation includes ProEquitin®, a unique blend of amino acids which have been scientifically proven to limit exercise induced muscle damage, aid muscle recovery post exercise and support protein synthesis and reduce protein breakdown as well as help glycogen uptake and storage.

Brewer’s Yeast provides naturally occurring B vitamins to aid energy metabolism. This prebiotic also encourages digestive efficiency and improves absorption of the important amino acids in the diet. Brewer’s Yeast therefore optimises nutrient utilisation, hindgut health and body condition.

Muscles require glycogen for energy metabolism and Muscle Fuel® provides Dextrose which increases the rate of post exercise muscle glycogen synthesis.


ProEquitin® - the building blocks of protein, Brewer’s Yeast, Dextrose.


  Additive number  per kg
B-hydroxy B-methylbutyrate (HMB)   205 g
Amino acids    
L-Leucine 3c382 256 g
Lysine (L-Lysine monohydrochloride) 3c322 154 g



Crude protein 39.3%
Crude oils & fats 0.6%
Crude fibre <0.1%
Crude ash 10.4%
Sodium <0.1%

Feeding Guide

Weight of Horse/Pony

Amount per day


Amount per day


Up to 250kg scoop ½ scoop
250kg – 400kg 1¾ scoops 1 scoops
400kg – 600kg 2¼ scoops scoops
Over 600kg 2¾ scoops 2 scoops


1 level (50ml) scoop of Muscle Fuel® weighs approximately 35g


Muscle Fuel® is safe to feed long term at the recommend feeding rates. Introduce gradually to your horse’s diet, splitting between feeds (when applicable).

We recommend that you feed half of the daily feeding rate of Muscle Fuel® within 45 minutes post-exercise each day, after the horse has had time to cool down, for optimal effect.

By providing smaller more frequent meals, this will help enhance absorption of nutrients in the small intestine. The higher the absorption rate of amino acids, the higher the contribution to the horse’s amino acid pool for tissue synthesis.

We also recommend feeding Feedmark's Replenish™ alongside Muscle Fuel® to aid muscle recovery from exercise.

Muscle Fuel® is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.

Feed supplements should be fed according to body weight.