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Prevention of vitamin B12 deficiency in people who need more vitamin B12 than usual due to certain conditions (such as pregnancy, thyroid problems, liver or kidney problems)
For truly treatment-naive patients, the early results can be striking
If the body needs more methylcobalamin, then the B12 molecule can be remethylated
Administered directly into muscle tissue, B12 injections bypass the need for absorption in the gastrointestinal tract, making them a highly effective method for increasing B12 levels in the body
188 A separate review suggests antioxidant supplementation can also improve semen quality and parameters such as concentration, motility, and morphology by attenuating oxidative stress-induced sperm damage
While often mild and self-limiting, it causes some users to discontinue therapy or struggle with dose escalation
