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How vitamin B12 (cyanocobalamin) works

B-12 shots are a quick and effective way to increase your vitamin B-12 levels, especially if you're struggling with absorption issues or have dietary restrictions

Those who follow a vegetarian or vegan diet may have trouble getting enough B12 from food alone

Pernicious Anemia Genotype Report: Access this content: An active subscription is required to access this content

Sometimes, particularly for people with an autoimmune condition called pernicious anemia, the immune system attacks the cells that make intrinsic factor