Biogena Vitamin B12 provides an essential water-soluble vitamin, cobalamin, which plays a crucial role in various bodily processes including energy metabolism, nervous system function, and mental well-being. It supports energy production and the normal functioning of the immune system, as well as helps maintain healthy homocysteine levels. For strict vegetarians and vegans who may have limited dietary sources of Vitamin B12, this supplement can ensure an adequate daily intake and help balance low levels from dietary sources.