b12 injections adverse reactions Vitamin Side Effects B12 Shot Guide: Benefits, Dosage

You can take it at any time of the day but try to take it at the same time each day

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So people at greatest risk for deficiency include those with low stomach acid (e.g., older adults and people on proton pump inhibitors or antacids) or low IF production (known as pernicious anemia), people on medications that interfere with B12 absorption (such as metformin), people who have had gastric surgery, those with GI conditions that impair nutrient absorption (like celiac or Crohn's disease), and people on vegan and vegetarian diets

When we take this version of Vitamin B12, our bodies must convert cyanocobalamin to a usable or preferred form of B12, which is methylcobalamin (14)