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They are injected directly into your muscles by a doctor and are very effective in increasing B12 levels in your blood and preventing or reversing B12 deficiency
Kidney Disease: Patients with kidney disease should use B12 injections with caution, as the kidneys are involved in metabolizing B12
It appears to display high specificity and minimal action on other hormonal systems, making it a target for research in GH stimulation
Peake, J.M., et al
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