This high strength,one capsule a day formula gives your system additional protection during cold and flu season with Advanced Immune Support. When your immune system is compromised due to illness, stress, exercise or dieting, these potent capsules help you fight off common colds, coughs and allergies. They contain the powerful Wellmune WGP Beta-(1,3/1,6)-D Glucan, a gluten-free ingredient derived from yeast, with vitamin C to help maintain healthy cells. Vitamin C contributes to the normal function of the immune system. Suitable for Vegetarians and Vegans.