Beta Glucan in the 1,3 / 1,6 form. With buffered vitamin C, zinc citrate and vegan Vitamin D from algae. Vitamin C, Zinc and Vitamin D all contribute to the normal function of the immune system. Ingredients:INGREDIENTS: one capsule provides: Beta 1,3/1,6 Glucan 250mg Vitamin C (magnesium ascorbate) 200mg Zinc (citrate) 10mg Vitamin D3 (1,000IU) 25ug Directions:As a food supplement, take one capsule daily with food, or as directed by your healthcare practitioner.