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It means the research is still catching up

Kaji, T
Once injected, B12 enters the bloodstream directly without requiring stomach acid, intrinsic factor (a protein necessary for B12 absorption), or healthy intestinal function

The focus on b12 specifically appears to be marketing rather than science
As an injectable prescription medicine, getting your Compounded* Liraglutide with B12 dose right and using it safely is an important part of your medicated weight loss journey

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