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Some people just dont absorb it very well due to a lack of a substance called intrinsic factor a protein produced in the stomach that binds to B12, helping it to be absorbed into the blood
We do not treat patients with a known hypersensitivity to cobalamin or cobalt, patients with a rare condition called Leber's optic atrophy, or patients who are pregnant or breastfeeding without GP sign-off
However, some researchers prefer filter needles for an extra layer of particulate protection
Cloyd, J
In combination with other vitamins, it helps in strengthening the immune system, improves the metabolism of the body, and is important for the nervous system
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