Finish Line’s XBL Ultra Powder promotes a healthy circulatory system, including healthy capillary strength in the lungs. XBL Ultra is great for horses in heavy training and essential for performance horses. Folic Acid, Vitamin B12, Vitamin C (Ascorbic Acid), and Vitamin K are some of the noteworthy ingredients that help support healthy blood and capillary strength.Dosage: 2.6 lb. is 56 day supply for 1 horse, maintenance, at 1 scoop (1 vol. oz, 21g) per day.Active Ingredients (per scoop)(1 scoop = 1 volume ounce = 21 grams)Angiohealth Blend 5260mgAscorbic Acid 525mgHesperidin Complex 500mgLemon Bioflavonoids 500mgFolic Acid 14mgVitamin K (menadione) 4.5mgNote: Some horses ( about 3%-5%) may need to stay on two (2) scoops daily.