Is 5000 μg of B12 too much? Understanding the Dosage, Safety, and Rationale
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5 min read
The recommended daily intake for an adult is just 2.4 micrograms (mcg) of vitamin B12, yet many supplements contain significantly higher doses, leading people to ask, "is 5000 μg of B12 too much?" The answer is complex, as the body's limited absorption rate means the amount on the label does not reflect what is actually processed.