b12 injection subcutaneous or im Choosing the Right Needle and Syringe for Injections: A Complete Guide Vitamin B12 Injection Sites: All

Pregnancy and Infertility: Pregnant women require higher levels of B12 for fetal development

Leah K.Verified PurchaseMar 15, 2026 Five weeks in and friends have asked what I am doing differently

You may also benefit from a B12 supplement if you have an autoimmune disease that attacks the stomach lining or GI tract (like Crohns or celiac disease), have had weight-loss surgery, or are taking heartburn medications that suppress stomach acid, Graham says

Who really benefits B12 shots make the biggest difference for people who are genuinely low, including: People with a diagnosed B12 deficiency Vegans and vegetarians, since B12 comes mainly from animal foods Older adults, who absorb B12 less efficiently People with pernicious anemia or digestive conditions that block absorption How to use B12 shots the right way If you decide B12 shots fit your plan, treat them as one piece of a bigger picture: Build the plan on food