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Heffernan, M., Summers, R
Supplements with intrinsic factor: Individuals with pernicious anemia may be advised supplements containing intrinsic factor, a protein facilitating B12 absorption
I am not a medically trained person but I've had Pernicious Anaemia (one of many causes of B12 deficiency) for more than 50 years
Dosing should be set by a prescribing provider
Segata, N
Some plans may also have specific rules about where you can get these injections and who can administer them, requiring you to go to a certain facility or see a specific provider for the treatment to be covered
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