NAF Five Star Respirator Boost for Horses is a highly effective nutritional supplement that’s been formulated to provide valuable support to the respiratory mucosal immune system and the delicate capillary blood vessels that surround the lungs. Respirator contains a concentrated solution of natural anti-oxidants, alongside herbs such as ginger, rosehip and blueberries, chosen for their targeted support of healthy lung function. Echinacea is also included for immune system support. Respirator is also recommended where close contact with other horses showing respiratory stress may be cause for concern. Essential oils in Respirator Boost help maintain clear airways. IngredientsWater, Methyl sulphonyl methane, Glycerine, Blueberry, Ginger, Gingko, Licorice, Oregano, Rosemary, Turmeric, Rapeseed oil.