do i need b12 injections for life Injections: Who Should Get Them and How Long They Last? If your B12 levels are
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Oral administration forces any compound to travel through the gastrointestinal tract, be absorbed across the intestinal epithelium, and then pass directly to the liver via the hepatic portal vein before reaching the rest of the body
doi: 10.1172/JCI9842
Each body is unique, so the duration of the effects of a vitamin B12 shot may vary
B12 Injections B12 shots (injections) deliver vitamin B12 directly into the muscle, bypassing the digestive system
But if they dont get your B12 level where it needs to be, injections may be the next step
