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This means that if you take more than your body needs, the excess is generally excreted in your urine, which is why B12 is considered very safe, even at high doses
For an over-the-counter tablet you are taking without a medical reason, your doctor may suggest pausing it and repeating the test later so the result can be interpreted cleanly
When you have PA, special antibodies are preventing your body from making IF (intrinsic factor)
They work best for people who are needle-sensitive and are willing to accept slower preparation time for less insertion pain
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