The Multi may assist with low energy due to its rich content of nutrients, including iron, vitamin B12, iodine, and zinc, that are essential for energy production and metabolism. Beef liver is a rich source of iron, vitamin B12, and other B vitamins, which are important for the production of red blood cells and energy metabolism. Oysters are a rich source of zinc, which is required for the production of enzymes involved in energy metabolism and immune function. Kelp is high in iodine, which is essential for proper thyroid function and metabolism. References to peer-reviewed articles: McClung, J. P., & Murray-Kolb, L. E. (2013). Iron nutrition and premenopausal women: effects of poor iron status on physical and neuropsychological performance. Annual Review of Nutrition, 33, 271-288. Killip, S., & Bennett, J. M. (1995). Chambers of the sea: the development of marine nutrient sources as dietary supplements. Journal of Applied Phycology, 7(6), 579-586. O'Leary, F., Samman, S., & Vitamin B12 in health and disease. Nutrients, 2(3), 299-316. Prasad, A. S. (2013). Zinc: an overview. Nutrition, 29(5), 711-716. Zimmermann, M. B. (2009). Iodine deficiency. Endocrine Reviews, 30(4), 376-408.