can anyone get a vitamin b12 injection Injections: What They and Can't Do How to Boost Immune System
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However, the oral route cannot be excluded as it did not depend on intrinsic factors only, as the simple diffusion (without the need for intrinsic factors) is now considered another mechanism for the absorption of vitamin B12 [49, 50]

In hypothalamic feeding centers, CNTF stimulates the proliferation of neurons that contain leptin-responsive elements [73]

Fat wasting is damaging: role of adipose tissue in cancer-associated cachexia

They put B12 straight into your blood, quickly easing symptoms and boosting B12 levels
