B vitamin
b vitamin
Any member of the group of eight water-soluble vitamins originally thought to be a single compound (vitamin B) that play important roles in cell metabolism. The group comprises of vitamin B<small><sub>1</sub></small>, B<small><sub>2</sub></small>, B<small><sub>3</sub></small>, B<small><sub>5</sub></small>, B<small><sub>6</sub></small>, B<small><sub>7</sub></small>, B<small><sub>9</sub></small>, and B<small><sub>12</sub></small> (Around 20 other compounds were once thought to be B vitamins but are no longer classified as such).