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Scientific References Frequently Asked Questions Can you have too much vitamin B12
Diluting more (for example 5 mL for 10 mg/mL) makes the draw marginally larger but still a fraction of a unit
You may notice increased difficulty with physical activities that were previously manageable, or a general sense of exhaustion that affects daily functioning
Because injections are thought to be cumbersome, and painful, and expensive
People who don't get enough of the essential vitamin can experience nausea, fatigue, dizziness or depression among other symptoms
Other tests they may do include: Advertisement Since vitamin B12 absorption is blocked, your healthcare provider may prescribe intramuscular vitamin B12 injections
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