What Is Supplementation? Supplementation refers to the use of products, such as vitamins, minerals, herbs, and other nutrients, to support overall health and fill gaps in one’s diet. These products are designed to complement, not replace, the nutrients obtained through food. Picture a busy professional who struggles to eat balanced meals; a daily multivitamin can provide essential nutrients that their diet might lack. However, supplementation is not just for deficiencies—it’s a proactive tool for optimizing health, improving performance, and addressing specific health concerns. At its core, supplementation is about giving the body what it needs to thrive.