The Nutriscience Greyhound Ultra E is designed to aid in muscle development and protect against muscle damage. Healthy muscles are vital in order to achieve peak athletic performance. The Nutriscience Greyhound Ultra E offers a combination of Vitamin E and selenium which are anti-oxidants. The specially blended formula is crafted to help protect performance dogs from muscle damage which can lead to soreness, stiffness, fatigue and in severe cases ‘tying up’.