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Symptoms of vitamin B 12 deficiency Symptoms tend to develop slowly and may not be recognized immediately
Follow-up Repeat metabolic markers after 8-12 weeks if the protocol is being continued or adjusted
The filtered out B12 from the liver goes into the bile to the duodenum where it goes back into the intestine to join with intrinsic factor and makes another pass through the gut
That means no surprise paperwork or follow-up bills
Excess B12 is excreted through urine as a water-soluble vitamin, reducing the risk of toxicity
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