The immune system is the body's natural defense against disease and infection. When it functions properly, it can keep you healthy and shield you from infections. Still, there are times when you need a boost to your immune system, especially if you're sick, stressed out, or traveling. Immunity Booster-60 Supplemental Health Capsules A useful and effective way to boost your immune system is by taking capsules. They consist of an essential blend of vitamins, minerals, and herbs that have been shown to improve immune function. Vitamin C: A potent antioxidant that helps shield cells from harm. Zinc: An essential mineral for the production of white blood cells, which fight disease. Elderberry: A fruit with antiviral and anti-inflammatory properties. Echinacea: A plant with proven health advantages.