Vitamin B12
Methylcobalamin
also known as Methylcobalamin, Cobalamin, Cobalamins, Cyanocobalamin
Supports nerve protection, red blood cells, iron use, digestion, absorption, metabolism, fertility, growth, memory, sleep, cardiovascular function, and homocysteine conversion.
- Supports nervous system growth and protection
- Supports nerve health
- Supports red blood cell formation
- Supports iron utilization
- Supports digestion
- Supports food absorption
- Supports carbohydrate and fat metabolism
- Supports cell formation
Related literature · not reviewed for these claims
These papers were imported by topic. They may concern plants, laboratory work, or different preparations. Inclusion here does not establish a human health benefit or support the claims above. How to read our sources →
- Comment on: "Clinical safety of ultra-high-dose methylcobalamin in patients with amyotrophic lateral sclerosis: Open-label extension of a phase 2/3 randomized controlled study".
- Ultra-high-dose methylcobalamin demonstrates safety in advanced ALS, but intramuscular administration poses practical burdens and its selected study cohort limits generalizability.
- Response to letter to the editor "Comment on: Clinical safety of ultra-high-dose methylcobalamin in patients with amyotrophic lateral sclerosis: Open-label extension of a phase 2/3 randomized controlled study".
- Sustainable steps forward in vitamin B(12)-catalysis.
- Synergistic efficacy of combined neurolysis and methylcobalamin in peripheral nerve injury: a randomized clinical trial.
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Common questions
It's central to nerve health and protection, and it's essential for forming red blood cells. Beyond that, it plays a role in digestion, iron use, metabolism, and even memory and sleep patterns.
There's some indication it may support both, likely tied to its broader role in nervous system health. It's more established as essential for nerve function generally than as a targeted sleep or memory fix.
People on plant-based diets, older adults (absorption naturally declines with age), and anyone with digestive conditions that affect absorption are the groups most commonly advised to pay attention to B12 levels.
B12 helps convert homocysteine, an amino acid that in high levels is linked to cardiovascular risk, into other compounds the body uses. It's one of the more overlooked cardiovascular connections.