iO Brewers Yeast

Brewers Yeast is a good source of B-complex vitamins.  Brewers Yeast may help to improve feed palatability & aid in improved digestion of fibre in the horses diet. Excellent source of several B Vitamins. Feeding yeast in early lactation may also improve milk production in mares and increase foal growth.  Can also be beneficial in improving glucose tolerance and may reduce blood sugar levels.

Protein and Minerals in Brewers Yeast

If you are looking for a way to add protein to your horse’s diet, brewers’ yeast is a viable option for high-quality protein. It also contains phosphorous, selenium, iron, zinc and chromium. Talk to your veterinarian or an equine nutritionist before adding additional protein and phosphorous. Too much protein can cause your horse to sweat excessively, which can lead to dehydration. If he gets more protein than he needs, he’ll excrete it, creating unhealthy ammonia in his living environment. Your horse may need additional phosphorous if he is on a diet high in calcium, to achieve a proper calcium-to-phosphorous ratio. Typically, however, it’s calcium that horse owners need to worry about, since your horse should get about twice as much calcium as phosphorous.


When you think of brewers’ yeast you may automatically think of digestive benefits, since yeast is used for equine probiotic supplements. However, those probiotics contain live yeast organisms, and brewers’ yeast organisms are dead. Your horse may or may not receive digestive benefits from brewer’s yeast, but digestive research on horses is not conclusive. At a minimum, and considering its other benefits, adding it won’t hurt him.


2 tablespoons daily for a 500 kg horse

Pack Size

  • 1 kg
  • 5 kg