esc laboratoire equiprotemix muscle development supplementDietary supplement for horses Energy supplement enriched with vitamins, minerals, and trace elements Supports muscle strengthening and development Increases stamina and aids recovery Naturally occurring protein content from soybean meal Source of magnesium, selenium, and zinc Magnesium is an essential mineral for your horse's body, playing a key role in numerous metabolic reactions while supporting bone, muscle, and liver health Zinc, found in muscles