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As your body absorbs B12 oral supplements and B12 injections in different ways, a dose of 1,000mcg of B12 taken orally is not equivalent to a B12 injection of 1,000mcg

Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients

Proton pump inhibitors reduce gastric acid production, which impairs the release of food-bound B12 but has less effect on synthetic B12 in supplements

If you have certain digestive disorders, including pernicious anemia, or have had gastric bypass surgery, oral B12 will simply not work because you can't absorb it correctly