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While oral bioavailability is lower than subcutaneous administration, these studies established that even high oral doses maintained excellent safety profiles, though higher doses (54 mg) were associated with increased gastrointestinal discomfort
Without intrinsic factor, oral supplements won't work, making injectable B12 for humans often necessary
You can decide which method to choose depending on which one is more comfortable for you
Diagnosing this condition requires a sharp eye for these signals, and often involves blood tests that check B12 levels, a complete blood count, and antibodies related to intrinsic factor
Side effects like nausea, vomiting, and gastrointestinal discomfort are common
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