B Vitamins are involved in every aspect of the essential catabolic process of generating energy within cells. A deficiency in any B Vitamin has negative consequences for this process leading to lower energy levels. Also the brain relies heavily on B Vitamins for neuro-chemical synthesis. For example, the concentration of Folate in the brain is 4 times as seen in plasma and biotin and pantothenic acid exist in concentrations of up to 50 times in the brain versus seen in plasma. Iodine is essential for the production of thyroid hormones thyroxine and triiodothyronine which help to regulate the basal energy metabolism. Fatigue and weakness are also common symptoms of an iodine deficiency. Magnesium is involved in over 600 reactions in your body including energy creation, muscle movements, and nervous system regulation. Chromium helps metabolise protein, carbs and fat to provide energy. The caffeine, vitamins, and antioxidants from Guarana, Green Tea Extract, and Yerba Mate Extract increase alertness and energy by blocking the effects of adenosine (a brain chemical that makes your feel tried) and triggering the release of adrenaline. Rhodiola Is an adaptogenic herb which alleviates fatigue and stress. Eleuthero is a neuroendocrine regulator herb which regulates the communication between hormone-producing endocrine cells and your nerve cells. The polysaccharides and oligopeptides in Panax Ginseng lower oxidative stress and raise energy production in cells. Taurine is an amino acid that increases blood flow, alertness, and delivery of glucose to muscles. Tyrosine is an amino acid that increase levels of neurotransmitters dopamine, adrenaline, and norepinephrine to improve alertness, memory, and mood in stressful situations. L-Carnitine helps your body convert fat into energy. L-Citrulline and CoQ10 promote an increase in cellular energy by increasing adenosine triphosphate (ATP) which is an energy source for your cells that helps to prevent the muscles from becoming fatigued quickly.