Myostem Mass

Muscular development


Appropriate nutrition is required to promote muscle development. Muscle cells are made up of specific proteins, themselves consisting of specific combinations of amino acids. A lack of limiting amino acids in horse feed can often hinder muscle growth.

MYOSTEM MASS is a complementary feed formulated by AUDEVARD Laboratories. Rich in essential and limiting amino acids, it is designed to provide nutritional support for muscle development in horses undergoing training and horses that are older out of shape, recovering from a disease as well as growing foals.


The MYOSTEM MASS formula provides a calculated and concentrated amount of «limiting» amino acids, so called as they are often found in insufficient quantities in food. Fenugreek improves feed intake in horses and prebiotics help digestion

What users say...

Users like this concentrated formula because it provides 60 g of amino acids per day.

Our advice

To get the best results with MYOSTEM MASS, it is important to provide a feed rich in carbohydrates and to give the product in the hours following exercise, so that it is assimilated during protein synthesis. If your horse does not work or only works a little, use BO YEA SACC instead for intensive support, as it can be combined with MYOSTEM MASS.


2.1 kg - Sufficient for up to 21 days' use in adult horses (42 days' use in foals).

6 kg tub. Sufficient for up to 60 days' use in adult horses (120 days' use in foals).

Nutritional support for horses’ muscular development during training, for elderly or frail horses and growing foals.

Daily allowance:
- Adult horses: 4 measures per day for 3 weeks minimum.
- Foals: 2 measures per day for 3 weeks minimum. For optimal use, give in the hours following the effort while ensuring an adequate carbohydrate intake (cereals etc.).

Intake per dose (25 g) : 


Potato protein : 15000 mg
Bio-Mos® : 1500 mg
L-Arginine : 525 mg
L-Histidine : 490 mg
Leucine : 475 mg
L-Lysine : 400 mg
L-Phénylalanine : 285 mg
L-Thréonine : 265 mg
L-Valine : 167,5 mg
L-Isoleucine : 62,5 mg
DL-Méthionine : 62,5 mg

Raw materials: potato protein, Fenugreek (Trigonella foenum-graecum), Calcium Carbonate, 12.1.5 Extract walls of specific yeasts, molasses ; Additives : Aromatic 2b Substances: L-Histidine 19.6 g, 19 g Leucine, L-Phenylalanine 11.4 g. 3c-amino acids: L-Arginine 3c3.6.1 21 g, 3.2.3 L-lysine monohydrochloride 16 g, 3.3.1 L-threonine 10.6 g, 3c3.7.1 L-valine 6.7 g, 3c3. 8.1 L-isoleucine 2.5 g, 2.5 g methionine 3c301; Analytical constituent : Humidity <8%, crude proteins 62%, crude fats 2.5%, crude ashes 12%, crude fibres 1%, sodium 0.5%

Product category

This product belongs to the complementary feed for horses category.


The product availability is dependent upon each country’s internal legislation.

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