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They are a popular therapy for exhaustion, burn out, and even post-party nausea.

Your body gives you signals when something is off

Because B12 and all other B vitamins are water-soluble, if you end up taking too much, they are easily eliminated in the urine

Your body does not make vitamin B12 on its own, so you have to get it from outside sources

These findings align with global analyses from Europe, North America, and Asia reporting similar population-level increases in vitamin B12 deficiency, where prevalence ranges from 5 to 20% depending on age, diet, and socioeconomic status

Long-term safety beyond 12 weeks has not been formally studied in large populations