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It is for this reason that the latter is not routinely available on the NHS and hydroxocobalamin is the preferred treatment

NNMT is an enzyme involved in nicotinamide metabolism and energy-related pathways

CONTENT DETAILS Last updated 25 Nov 2025 | 09:34 AM (UTC) We provide you with authentic, trustworthy and revelant information Read our editorial policy Medicine brands for Methylcobalamin Expert advice for Methylcobalamin Methylcobalamin helps replenish vitamin B12 level in your body

Untreated, it can lead to neurological complications, and in serious cases, death

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