Vitamin B12 (Methylcobalamin)

Methylcobalamin is the natural, directly bioavailable form of vitamin B12, a water-soluble vitamin belonging to the cobalamin group. It is found primarily in animal-based foods — meat, fish, eggs, and dairy products — which puts people following vegetarian or vegan diets at a higher risk of deficiency. Vitamin B12 contributes to normal energy metabolism by helping convert macronutrients into energy the body can use. It also plays a role in the normal formation of red blood cells and the proper functioning of the immune system. In addition, it contributes to the normal functioning of the nervous system and to normal psychological function, notably through its involvement in the synthesis of certain neurotransmitters and in maintaining the myelin sheath that protects neurons. Supplementation with methylcobalamin is particularly relevant for individuals whose dietary intake is insufficient or whose absorption capacity is reduced — a situation that becomes more common with age. In this active form, vitamin B12 does not require prior conversion by the liver, making it easier for the body to assimilate.