Methylcobalamin
Also called Methyl-B12
Methylcobalamin is the active coenzyme form of B12 used in the methylation cycle. It is an excellent choice for supporting homocysteine metabolism, nerve health, and methylation status. It is well tolerated and does not require conversion, making it ideal for people with MTHFR variants or suspected poor B12 activation.
Best for
Methylation support, homocysteine, nerve health
Absorption
High
Tolerability
Excellent; the most body-ready form
Typical timing
Morning or any time; sublingual forms may be taken without food
How to take Methylcobalamin
A typical dose of Vitamin B12 (Cobalamin): 2.4 mcg RDA; 500–1,000 mcg for deficiency or vegan diets; 1,000 mcg weekly injections if malabsorption. Best timing: Morning or any time; sublingual forms may be taken without food. The form you choose mainly affects absorption and how easily it sits with your stomach, not the overall dose.