Beta Glucans Immune Support. Immunityn is a specially formulated immune support supplement combining Wellmune® Beta Glucans with Vitamins C, D and Zinc. Immunityn uses the patented ingredient Wellmune®, a highly purified gluten-free beta glucan, naturally derived from the cell walls of baker’s yeast (Saccharomyces cerevisiae). This proprietary natural yeast (1.3, 1.6 beta glucan) Wellmune®, differs from other forms of beta-glucan in both chemical structure and biological activity but beta glucans aren’t new. In fact they were discovered in the mid-20th century.Our product also contains vitamins C & D and the mineral zinc. - Vitamins C, D and Zinc contribute to the normal function of the immune system. - Vitamin C and Zinc are antioxidants which contribute to the protection of cells from oxidative stress. - Vitamin C also contributes to the reduction of tiredness and fatigue and normal