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Theyre also helpful for people who dont get enough B12 from their diet (spoiler: often vegetarians and vegans) and for people whose guts cant break down and absorb the vitamin
FDA.gov (2026) 11
It also affects neurotransmitter systems like dopamine and serotonin, improving mood and cognitive function
Follow-Up : Regular follow-up appointments may be necessary to monitor your Vitamin B12 levels and adjust the frequency of injections as needed
PMCID: PMC7108996 Jimnez-Reina, L., Caete, R., de la Torre, M
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