No. 1 pharmacist recommended vitamin & supplement brand (Based on a survey of pharmacists who recommend branded vitamins and supplements). Fast absorption. Immune health support. Blended with Purpose: Nature Made Wellblends are crafted using a blend of ingredients that are scientifically designed to support your body's health. No synthetic dyes. Color derived from natural sources. Quality tested in the USA. Made to our guaranteed purity and potency standards. Immune System Support: Scientifically designed with essential immune support nutrients vitamins C, D3, and zinc, plus 7 B vitamins and an electrolyte hydration blend (Sodium, potassium, and magnesium) that helps support replenishment of water and nutrients. Vitamin C: An antioxidant that helps support the immune system and neutralize free radicals in the body. Vitamin D3: Helps support a healthy immune response. Zinc: An essential mineral necessary to support the body's natural defense system and provides antioxidant support.