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It is a single daily subcutaneous injection on a provider-determined schedule
Self-injector devices, for example, are designed to give the shot with the simple push of a button, which can feel much less intimidating
Summary More efficient oral and injectable forms may cause B12 overload
You're more likely to have vitamin B12 deficiency if you have a medical condition where your body can't absorb B12 or you follow a strict vegan diet
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