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l-carnitine and vitamin B12 differences and similarity

l-Carnitine and Vitamin B12 have some similarities and some differences in their functions and actions in living organisms.


Both are essential micronutrients: Both L-Carnitine and Vitamin B12 are essential micronutrients for normal physiological functioning of the body and their deficiency may lead to health problems.

Involved in energy metabolism: l-carnitine is mainly involved in the oxidation of fatty acids and energy metabolism, converting fat into energy. Vitamin B12, on the other hand, is involved in the production of red blood cells, the maintenance of a healthy nervous system, and in the normal metabolism of proteins, fats, and carbohydrates.


Chemical structure and source: l-carnitine is an amino acid derivative derived primarily from animal foods and synthesized in the body from the essential amino acids lysine and methionine. Vitamin B12, on the other hand, is synthesized by microorganisms and is mainly found in animal foods, with lesser amounts in plant foods.

Functional diversity: L-Carnitine is not only involved in energy metabolism, but also has the function of removing harmful substances from cells, protecting cell membranes, and anti-fatigue, etc. Vitamin B12 has more diverse functions. Vitamin B12 has more diverse functions, including promoting red blood cell production, maintaining nervous system health, and preventing anemia.

benefits of their own


1.L-carnitine is an amino acid. Its primary physiological function is to facilitate the conversion of fat into energy. Specifically, l-carnitine transfers esteroyl coenzyme A from the body to the mitochondria, thereby converting fat into energy.

2.This substance can be used by patients with renal insufficiency, and studies have shown that l-carnitine has cardioprotective properties and can also be used to treat coronary heart disease.

3.In addition, l-carnitine is often used for weight loss due to its ability to promote fat metabolism, but this use is controversial. l-carnitine is widely used in medicine, health care and food, and is commonly found in chewable tablets, drinking liquids, capsules, milk powders and milk beverages.


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♦Vitamin B12 is converted in the body to methylcobalamin and adenosylcobalamin to produce activity, and methylcobalamin is involved in folate metabolism.

♦Vitamin B12 can promote the development and maturation of red blood cells, so that the body’s hematopoietic function is in a normal state, preventing pernicious anemia and maintaining the health of the nervous system.

♦In addition, vitamin B12 can increase the utilization rate of folic acid, promote the metabolism of carbohydrates, fats and proteins, which is important for the growth and development of infants and children. It also metabolizes fatty acids so that fats, carbohydrates, and proteins are properly utilized by the body, helping to eliminate restlessness, focus, and enhance memory as well as a sense of balance.

♦Meanwhile, vitamin B12 is an indispensable vitamin for the nervous system and is involved in the synthesis of a type of lipoprotein in nerve tissue.


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To summarize, l-carnitine’s main role is to promote the conversion of fat into energy, while vitamin B12 is primarily associated with red blood cell development, nervous system health, and energy metabolism.