Caffeine free. Stimulant free. Release your inner strength! Natural energy that lasts. 1st Step Supplements are purchased by over 175 professional & university sports teams-because they work! No crashing. Vitamin B-12, the energy vitamin, is a natural energy source. It is essential for many functions within the body and vital for maintaining optimum health including: Formation of red blood cells; Maintenance of the central nervous system; Support of healthy heart functions; Combating chronic fatigue; Formation of DNA; Regulating metabolic pathways. Made in USA.