Benefits of B12 Injections for Optimal Health B12 Shots Do You Need a Prescription? A Complete Guide Carter's Walk In + Urgent Care Thinking of a B12 injection for wellness? Here's what you need to know Vitamin B12 injections are prescription only medications and for good reason. They're intended to treat a clinically Vitamin B12 shots Prescription injections used to treat severe deficiency, pernicious anemia, or absorption issues (e.g., Crohn's, gastric bypass). They provide rapid, 100% absorption directly into the bloodstream, bypassing the digestive system. A B12 shot might be just what you need if, youre feeling constantly tired, sluggish, or mentally foggy. This essential vitamin plays a key role in energy production, metabolism, and cognitive