Nutritional biochemist Dr. Erin Barrett, director of product innovation and scientific affairs at Shaklee Corporation, has shared her two supplements for optimal mitochondrial function and increased overall energy. She recommends multivitamin supplements for those who are low-energy, as they can fill in nutrient gaps and aid in reducing severe irritability in teens. She also recommends creatine supplements for low energy-rich individuals, as it helps power our bodies’ cells and helps recycle our own energy. However, she is skeptical about B vitamins, stating that most people get enough B vitamins.