Vitamin E can be obtained from natural or synthetic sources, but the chemical structure of each is different. The following studies were conducted to determine if synthetic and natural-source vitamin E have similar bioavailabilities when administered at equal IU doses and to determine if water-dispersible forms of vitamin E are more bioavailable than lipid-soluble forms. […]

Performance horses compete in a wide variety of athletic events ranging from high speed racing to 100 mile endurance rides. These types of exercise are known to induce oxidative stress, leading to the generation of free radicals.