In contrast, the passive diffusion process of B 12 absorption normally a very small portion of total absorption of the vitamin from food consumption may exceed the haptocorrin- and IF-mediated absorption when oral doses of B 12 are very large, with roughly 1% efficiency
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Rotating injection sites prevents accumulated irritation
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These are the standard B12 injection sites for self-administration
Research has found B12 effective in treating pain from diabetic neuropathy and other conditions