Immune with our vitamin B complex (Our vitamin B complex contains thiamin, riboflavin, niacin, vitamin B6, vitamin B12, biotin and pantothenic acid). Wholesome & Complete: Dr. Zak Zarbock, a pediatrician and father, couldn't find effective chemical-free products to keep the whole family healthy, so he created his own products, including handpicked natural ingredients, whenever possible. The result is Zarbee's Naturals. Colors from natural sources. With real elderberry extract for immune support.