Clinical Essentials contains more effective forms—at effective dosage levels—of clinically validated nutrients to fill the gaps in your diet. Clinical Essentials Supports: Vibrant Energy, Mood, and Stamina—Bioavailable B vitamins in their most effective form for optimal utilization in the body.* Immune System Strength—Proper levels of vitamins and TRAACS™ chelated minerals to help you stay healthy all year long.* Bone and Collagen Structure—Unique sources of boron and vitamin K2, plus TRAACS chelated calcium and magnesium for healthy bone formation.* Heart and Arteries—Provides a complete array of nutrients to support healthy heart function.* Metabolism and Blood Sugar Balance—Vanadium and chromium for healthy blood sugar metabolism.*† Antioxidant Defense—Vitamin C, E, and A with selenium to prevent oxidative stress and damage.* Selenium may reduce the risk of certain cancers. Some scientific evidence suggests that consumption of selenium may reduce the risk of certain forms of cancer. However, FDA has determined that this evidence is limited and not conclusive.