B vitamins are vital for energy, and are required to process energy from food. B vitamins help prevent infections, and promote the production of red blood cells, good eye-sight, improved digestion, appetite, and the production of hormones and beneficial cholesterol. B vitamins also power the brain; one of the first signs of B vitamin deficiency is low energy, poor concentration, brain fog, and low mood. Feeling run down? You may need more B vitamins. B vitamins help with stress management and nervous system function. Note: B vitamins are water soluble, and so are dispersed from the body quickly - within 4-5 hours. This means the body requires a daily source of B vitamins. 60 capsules.