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However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional
To help bypass any barriers to absorption in the GI tract, many healthcare providers recommend B12 injections for deficiency, but research shows that very high doses of oral B12 (1,000 to 2,000 mcg once a day) can normalize serum B12 levels to a similar extent with minimal side effects
When should I seek medical help after a B12 injection
Interactions with Other Drugs Vitamin B12 can interact with several medications, so inform your healthcare provider about all the drugs you are taking
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