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Doctors watch for signs like more energy and better test results to see if the dose is right
As with any supplement or medication, individual responses vary
If you are very B12 deficient you will notice an increase in energy and a reduction in symptoms of tingling, numbness, or twitching/zaps within 24 hours
Additionally, B12 is involved in energy metabolism, aiding in the conversion of food into energy, and has implications for mood regulation through its role in neurotransmitter synthesis
Safety Profile and Possible Side Effects of B12 Shots B12 injections are generally regarded as very safe
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