Vitamin B-12, the energy vitamin, is a high-potency natural energy source. It is essential for many functions within the body and is vital for maintaining optimum health including: formation of red blood cells, maintenance of the central nervous system, formation of DNA, regulation of metabolic pathways and support of healthy heart functions. 1st Step for Energy High Potency B-12 is a great tasting supplement you will enjoy taking day after day. Regular, consistent supplementation provides the maximum benefits possible. As always with 1st Step, there is no reflux or upset stomach and 1st Step is priced competitively to make it a part of your daily supplementation regimen.