vitamin b12 injections vs pills

Due to this Vitamin B12 does not get absorbed, as the intrinsic factor is responsible for vitamin B12 absorption can vitamin b12 injections have side effects of injection Effects: What to Expect does vitamin b12 https://www.mcguff.com/content/images/thumbs/0017590_cyanocobalamin-b12-injection-1000-mcgml-multiple-dose-vial-30-ml_550.jpeg Size:Five dilution

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