The body uses selenium, an essential trace element, to create a system of enzymes that help maintain and protect cellular tissues against oxidation caused by free radicals. Health Aid Selenium, specially fortified with vitamins A, C, E and zinc, has antioxidant properties and works against the action of free radicals. Thanks to the vitamins it contains, it protects other vitamins, cleanses the body of toxins with a key role in the immune system.