is b12 orally as good as injections Vitamin vs. Oral Supplements: Which Do You Actually Need? B12 Injection Services - Subtly
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Carmel R (2008) How I treat cobalamin (vitamin B12) deficiency

European Medicines Agency (2023)

Other research has examined dosing before exercise, based on the hypothesis that combining the peptide with physical activity might enhance fat oxidation

doi: 10.2337/diabetes.49.2.143