You may need vitamin B! Lack of vitamin B in your regimen may impact your physical health in different ways. Hundreds of bodily biochemical reactions are supported by B-vitamins, and deficiency in vitamin B can lead to fatigue and lethargy. A B-complex vitamin is a mixture of eight essential B-vitamins that are critical to metabolism at the cellular level. Isotonix Activated B-complex helps to maintain healthy levels of serotonin, increase energy and decrease stress. It also delivers metabolically active forms of several vitamins and minerals in isotonic form, ensuring that your body receives and uses vital nutrients quickly and efficiently.