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This leads to complex changes in hormones that control metabolism resulting in less food intake, decreased hunger, increased fullness and, ultimately, changes how the body absorbs food for energy
For many others, high-dose oral B12 works just as well (NIH ODS
Subcutaneous: B12 Injection Procedure Administering a subcutaneous B12 injection follows a similar process to intramuscular injections but involves injecting the B12 solution into the fatty layer of tissue just beneath the skin
Oral supplements are available, but they may have lower bioavailability compared to IV administration
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