Quick Summary

Cyanocobalamin is a synthetic form of vitamin B12, a water-soluble vitamin within the vitamin B complex group. It is widely used in dietary supplements and fortified foods to prevent or treat vitamin B12 deficiency.

What Is It?

Cyanocobalamin is a man-made, synthetic form of vitamin B12, chemically identical in its vitamin activity to naturally occurring cobalamins. It belongs to the group of water-soluble B vitamins that play critical roles in cellular metabolism. Unlike natural forms of vitamin B12 found in animal-derived foods, cyanocobalamin is commonly used in supplements due to its stability and cost-effectiveness in manufacturing.

Main Functions in the Body

  • Supports normal functioning of the brain and nervous system
  • Essential for red blood cell formation and prevention of anemia
  • Involved in DNA synthesis and regulation
  • Participates in energy metabolism through the conversion of food into usable energy

Recommended Intake and Upper Limit

Recommended intake levels for vitamin B12 apply to cyanocobalamin when used as a source. These values vary by age, sex, and life stage, including pregnancy and breastfeeding status. Specific recommended dietary allowances (RDAs) or adequate intakes (AIs) and upper intake levels (ULs) are not provided in the current data. Notably, there is no established upper intake limit for cyanocobalamin due to its low toxicity profile.

For precise guidance on daily requirements, it is advisable to consult national nutrition authorities or healthcare professionals.

Best Food Sources

Natural sources of vitamin B12 include primarily animal-based foods such as meat, poultry, fish, dairy products, and eggs. Cyanocobalamin itself is not found naturally in foods but is used to fortify certain products and in dietary supplements.

Deficiency: Causes, Symptoms and Risk Groups

Vitamin B12 deficiency, which cyanocobalamin supplementation aims to address, can arise from inadequate dietary intake, malabsorption issues, or certain medical conditions. The data does not specify cyanocobalamin-specific deficiency symptoms or distinct risk groups beyond those generally associated with vitamin B12 insufficiency.

Supplement Forms

  • Cyanocobalamin (synthetic vitamin B12 supplementation form)

Potential Benefits: What Does the Evidence Say?

Correction of Vitamin B12 Deficiency

Cyanocobalamin is an established and widely studied form used to prevent and treat vitamin B12 deficiency. Evidence from human studies consistently supports its efficacy in restoring vitamin B12 status. However, specific clinical trials detailing supplementation dosages and protocols are not provided in the supplied data.

Side Effects and Toxicity

Cyanocobalamin is generally considered safe with a low risk of toxicity. No formal upper intake limit has been established due to the water-soluble nature of the vitamin and its low adverse effect profile. Common side effects are not documented in the current evidence, suggesting good tolerability.

Drug and Nutrient Interactions

No specific drug or nutrient interactions related to cyanocobalamin supplementation are detailed in the provided data. In general, vitamin B12 absorption and metabolism can be influenced by certain medications such as proton pump inhibitors, metformin, and others, so consultation with a healthcare professional is advisable.

Who Should Be Careful?

People who are pregnant, breastfeeding, have medical conditions affecting nutrient absorption (e.g., pernicious anemia, gastrointestinal disorders), or who use medications potentially impacting vitamin B12 status should seek guidance from a healthcare professional before starting supplementation. Caution is prudent to tailor intake to individual needs.

Frequently Asked Questions

  • Is cyanocobalamin the same as vitamin B12?
    Cyanocobalamin is a synthetic form of vitamin B12 and is converted into active forms of the vitamin in the body.
  • Can cyanocobalamin cause side effects?
    It is generally well tolerated, with no common side effects reported at typical supplemental doses.
  • Who might need cyanocobalamin supplements?
    Individuals with vitamin B12 deficiency, those on strict plant-based diets, older adults, and people with malabsorption issues might require supplementation.
  • Is there a risk of overdose?
    No formal upper limit exists due to low toxicity, but it is always advisable to use supplements under healthcare supervision.

Evidence Limitations

  • No direct study abstracts, clinical trial details, or dosage-specific summaries were provided in the supplied data.
  • Lack of detailed clinical supplementation data limits the ability to give precise intake recommendations.
  • EU-authorized health claims related to cyanocobalamin or vitamin B12 were not supplied, indicating a need for regulatory review.

References

Disclaimer: This page provides information based on currently available evidence and is for educational purposes only. It does not substitute for professional medical advice, diagnosis, or treatment. If you are pregnant, breastfeeding, have a health condition, or take medication, please consult a healthcare professional before starting any new supplement.

Last reviewed: June 2024