UltraCruz Equine Selenium Supplement for Horses is an equine dietary supplement that provides organic Selenium, an important antioxidant and trace mineral for horses that helps provide the body with nerve, muscle and joint support. In addition to helping to reduce oxidative stress, Selenium supports breeding performance and normal metabolic function. Performance horses participating in rigorous activity can benefit from additional antioxidant supplementation. This palatable powder formula may be especially beneficial for horses living in Selenium deficient regions. Developed and manufactured in the USA with globally-sourced ingredients by Santa Cruz Animal Health