Muscle Builder

Muscle Builder

Good muscle development is essential for optimal performance. Some horses struggle to put on muscle and other horses may have poor muscle development as a result of previous injury. Whilst no supplement can increase muscle in the absence of training certain nutritional ingredients have been shown to increase muscle growth and repair. Muscle Builder delivers the optimal amounts of the only three key ingredients proven in controlled scientific studies to promote muscle growth and aid muscle repair.

HMB (B-hydroxy B-methylbutyrate) which is formed from the metabolism of the essential amino acid Leucine and which has been shown in studies to reduce muscle protein breakdown. Small amounts of HMB are made within the horses’ body from the Leucine present in high quality protein but a horse would need to eat 4kg of protein a day to produce the amount of HMB in Muscle Builder. This would be equivalent to eating 30-40kg of oats or a complete hard feed.

Leucine is one of nine essential amino acids which must be obtained from the diet as they cannot be synthesised from other components in feeds or forage. In human sport, BCAA (leucine, isoleucine and valine) have been shown to aid in recovery processes from exercise such as stimulating protein synthesis, aiding glycogen replacement, delaying the onset of fatigue, decreasing muscle soreness following exercise and helping maintain mental function in aerobic-based exercise. These effects are now considered to be due to Leucine.

L-Lysine: Muscle Builder also provides the essential amino acid L-Lysine which is considered to be the first limiting amino acid when it comes to protein synthesis (i.e. muscle growth) in horses. Muscle Builder contains the optimal amounts of human grade HMB, Leucine and Lysine to support development of muscle mass, increase response to training, decrease muscle soreness and improve stamina.

Muscle Builder is suitable for any horse in training in any discipline.  Muscle Builder is suitable for developing muscle or helping muscle to repair and recover from hard training. Muscle Builder is also suitable for horses that struggle to maintain condition or which are prone to muscle problems.

Instructions: Level 25 ml (10,3 g) scoops per day

  To support muscle growth To maintain existing muscle condition
Pony ≈ 250 kg 3
Horse ≈ 500 kg 6 4
Large horse > 700 kg 5

Muscle Builder should be fed for at least 4 weeks at the Muscle Building rate. At least 2-3 scoops per day should be fed in a small feed as close to the end of exercise as possible.


Dextrose, L-Leucine, B-hydroxy B-methylbutyrate, L-Lysine HCl, flavour

Additives (/kg)

EC permitted mint flavour 2g

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Active ingredients

Leucine (g)
HMB (g)
Lysine (g)
Carbohydrate (g)


Protein %
Fibre %
Fats& oil %
Carbohydrate %
Ash %