Vitamin B12, or cobalamin, is an essential water-soluble vitamin that the body cannot produce on its own. It must be obtained from food or supplements. B12 supports normal red blood cell formation, nervous system function, and energy metabolism. It is found almost exclusively in animal products, which is why certain groups are more likely to have lower intakes.
Who commonly supplements vitamin B12?
People following vegetarian or vegan diets have limited dietary sources of B12, since it is found primarily in meat, fish, dairy, and eggs. Older adults also commonly supplement B12 because the ability to absorb it from food decreases with age — a process called intrinsic factor decline. People taking certain long-term medications may also be advised to monitor their B12 levels.
Methylcobalamin vs cyanocobalamin
Cyanocobalamin is the most common form of B12 found in supplements. It is stable, inexpensive to manufacture, and well studied. The body converts it into active forms before using it. Methylcobalamin is one of the two active forms of B12 — it does not require conversion in the same way. It is the primary form found in the blood and is involved directly in methylation reactions in the body. Some people prefer methylcobalamin because it is already in the active form.
What does 1000 mcg mean?
Mcg stands for micrograms. 1000 mcg is a standard supplement dose for B12, which is much higher than the daily dietary requirement (approximately 2.4 mcg for adults). The reason for this high dose is that only a small percentage of oral B12 is absorbed through the gut via the intrinsic factor pathway — the rest passes through. A high oral dose compensates for this limited absorption.
Available product
Supplements & More carries Nutricost Vitamin B12 Methylcobalamin 1000 mcg (240 capsules — 240 servings). Imported from the United States, delivered across Lebanon with cash on delivery.