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Key takeaways Vitamin B12 absorption is a complex process involving multiple steps in the digestive system Taking B12 on an empty stomach can increase passive absorption by about 60%, especially beneficial for high-dose supplements Active absorption of B12 may be more efficient when taken with food , as food stimulates the release of protein to help absorb the vitamin Understanding vitamin B12 absorption The absorption of vitamin B12 is a multi-step process that involves several components of the digestive system

You can also see a clinician to rule out sleep apnea

This is particularly advantageous for individuals who may not obtain sufficient vitamin B12 through their regular diet

Depending on the underlying reasons for your B12 deficiency, treatment might last for three-to-twelve months, or longer if related to a chronic medical issue such as pernicious anemia