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Recap the vial with the original stopper or a sterile cap after every withdrawal

Even the review paper summarizing this study noted the results are not overly informative and reliable due to the lack of objective measures

In mice, monthly micro-courses (5 injections per month starting at 3 months old) didnt change average lifespan but extended maximum lifespan and reduced chromosomal damage

Doctors usually treat vitamin B12 deficiency successfully once they identify the cause

Vitamin B12 shots help replenish essential nutrients that support energy metabolism, nerve signaling, and healthy red blood cell production, which may ease ongoing fatigue