Revive If you are feeling tired and run down all the time, suffering from unexplained aches and pains and continually falling victim to colds and other infections, then you may have a vitamin B12 deficiency
PubMed laboratory research record [PMID: 1250550] PubMed record related to this compound for laboratory literature review
How to check for Vitamin B12 deficiency with lab tests: Serum Vitamin B12 levels: should be in the top 75% percentile of the lab reference range (yes even mid-range can still be too low)
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Symptoms include persistent fatigue and low energy, brain fog and poor concentration, low mood, anxiety or depression, memory problems, tingling or numbness in hands and feet, poor sleep quality, weakened immune function and hair thinning and loss
We recheck labs and body composition at regular intervals