Classification Vitamins are divided into two groups: fat soluble vitamins and water-soluble vitamins The fat-soluble vitamins include vitamin a.d. e and K The water-soluble vitamins include the vitamin B complex and vitamin c, etcClassification • Vitamins are divided into two groups: fat￾soluble vitamins and water-soluble vitamins. • The fat-soluble vitamins include vitamin A, D, E, and K. • The water-soluble vitamins include the vitamin B complex and vitamin C, etc