Beta Glucan in the 1,3 / 1,6 form. With buffered vitamin C, zinc citrate and vegan Vitamin D from lichen. Vitamin C, Zinc and Vitamin D all contribute to the normal function of the immune system.   Vegan, Kosher Supporting a healthy immune system is important for increasing resistance to and preventing infections. The ingredients in Beta Glucan with Vitamins C, D and Zinc . Daily use may help reduce the risk of upper respiratory tract infections, especially when due to increased mental and physical stress.   Beta Glucan in the 1,3 / 1,6 form. With buffered vitamin C, zinc...