The FitZup Immunity Support. Live the healthy life with this powerful, natural dietary immune support supplement. Boost Immunity, Energy, Detoxification, Alkalinity, Circulation, & Clear Thinking. Maximize the body’s natural Immune defense, Hair, Skin, Nails, Digestive System, Bones, Teeth, and Joints with this all rounder product. It is an all natural plant and herbal based formula.