A na-atụgharị vitamin A ka ọ bụrụ retinol na anya ma na-ahụ maka nkwụsi ike nke membranes cellular.

Vitamin D₃Na-arụ ọrụ dị ukwuu na nhazi nke calcium na phosphate na plasma.

Vitamin E na-arụ ọrụ dị ka ihe antioxidant na onye na-ahụ maka radical free karịsịa maka acid fatty na-adịghị edozi na phospholipids nke membranes cell.

Vitamin B₁na-arụ ọrụ dị ka co-enzyme na ndakpọ nke glucose na glycogen.

Vitamin B₂Sodium Phosphate bụ phosphorylated iji mepụta co-enzymes Riboflavin-5-phosphate na Flavin Adenine Dinucleotide (FAD) nke na-arụ ọrụ dị ka ndị na-enweta hydrogen na ndị na-enye onyinye.

Vitamin B₆A na-atụgharị ya na pyridoxal phosphate nke na-arụ ọrụ dị ka njikọ-enzyme na transaminases na decarboxylases na metabolism nke protein na amino acids.

A na-atụgharị Nicotinamide ka ọ bụrụ ngalaba-enzymes dị mkpa.Nicotinamide Adenine Dinucleotide (NAD) na Nicotinamide Adenine Dinucleotide Phosphate (NADP).

Pantothenol ma ọ bụ pantothenic acid na-agbanwe ka ọ bụrụ Co-ensyme A nke nwere ọrụ dị mkpa na metabolism nke carbohydrates na amino acid na njikọ nke fatty acids, steroid na acetyl co-enzyme A.

Vitamin B₁₂achọrọ maka njikọ nke akụrụngwa nucleic acid, njikọ nke mkpụrụ ndụ ọbara uhie na metabolism nke propionate.

Vitamin dị mkpa maka ịrụ ọrụ kwesịrị ekwesị nke ọtụtụ ọrụ physiologica.