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What is Cyanocobalamin?

Cyanocobalamin is a synthetic form of vitamin B12 that is widely used in supplements and fortified foods due to its excellent stability and cost-effectiveness. The body converts cyanocobalamin into the two biologically active B12 coenzymes — methylcobalamin and adenosylcobalamin — through a series of enzymatic steps. The 'cyano' group attached to the cobalamin molecule stabilises it during manufacturing and storage, giving cyanocobalamin a longer shelf life than the active B12 forms.

Vitamin B12 is the most chemically complex of all vitamins and the only vitamin that contains a metal ion (cobalt, giving it the name 'cobalamin'). It is essential for the formation of red blood cells, the maintenance of the nervous system through myelin synthesis, DNA synthesis, and the metabolism of homocysteine — a key amino acid involved in cellular methylation processes. B12 is naturally found only in animal-derived foods, making supplementation particularly relevant for those following vegan or vegetarian diets.

EFSA-approved health benefits

The European Food Safety Authority (EFSA) has confirmed that vitamin B12:

• contributes to normal energy-yielding metabolism
• contributes to the normal functioning of the nervous system
• contributes to normal homocysteine metabolism
• contributes to normal psychological function
• contributes to normal red blood cell formation
• contributes to the normal function of the immune system
• contributes to the reduction of tiredness and fatigue
• contributes to normal cell division

Why we use Cyanocobalamin in Nutri-Leaf formulas

Nutri-Leaf Vitamin B Complex uses cyanocobalamin as the source of vitamin B12. Cyanocobalamin is the most stable and thoroughly studied form of B12 for supplementation, with decades of research supporting its reliable conversion to the active coenzyme forms in the body. Each capsule provides 2.5µg (100% NRV) alongside the other seven essential B vitamins in a comprehensive once-daily formula. For those seeking the active form directly, Nutri-Leaf also offers methylcobalamin as an ingredient.

Products containing Vitamin B12

The Nutri-Leaf product featuring cyanocobalamin is Vitamin B Complex, which provides all eight B vitamins at 100% NRV per capsule in a comprehensive formula for energy, nervous system, and immune support.

Learn more about the role of B12 in energy and nervous system health on our Energy & Vitality and Stress Management guides. Visit the Ingredient Philosophy page for more on our nutrient form selection principles.

Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.