The 4.2V limit is a critical safety barrier designed by electrochemists to keep the battery within stable operating conditions
For malabsorption (e.g., pernicious anemia), injections are often preferred, though some clinicians still use very high-dose oral regimens (NIH ODS)
Continue to include whole food protein sources such as lean meats, fish, eggs, legumes, and dairy products as tolerated
Previous bariatric surgery Patients with any history of gastric bypass, sleeve gastrectomy, or other bariatric procedures require lifelong b12 monitoring and supplementation
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However, it can also be given subcutaneously