can b12 injections make you sick Are Vitamin Shots Right for You? Who Should Take Vitamin B12

Careful explanation was sufficient reassurance that there would be no untoward effects

5-Amino-1MQ was not listed as an FDA-approved drug when this page was checked on July 30, 2026

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

This could negatively affect glycemic control and predispose people with diabetes to more complications

When you hear about vitamin b complex shots, you're learning about a group of eight water-soluble nutrients your body needs to function at its best