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It sounds simple
The three validated injection sites are: the lower abdomen (at least 5 cm from the navel), the outer thigh, and the outer upper arm
Subcutaneous injection is the only viable route for meaningful bioavailability
Think of it as an alarm clock for tissue that fell asleep
People over the age of 14 should consume more than 2.4 micrograms (mcg) of vitamin B-12 daily
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