According to a study published in Frontiers in Pharmacology, intramuscular administration of vitamin B12 produces a faster increase in serum levels compared to oral routes, although both methods are effective in restoring normal cobalamin levels in patients with deficiency
More severe side effects are rare but can include low potassium, headache, dizziness, and chest pain
, 16 , 1303-1314, doi: Nishizawa, S., Araki, H., Ishikawa, Y., Kitazawa, S., Hata, A., Soga, T., and Hara, T
Mood Support Adequate B-12 contributes to emotional balance and reduced feelings of stress
It does not sterilize the vial, and it does not kill everything that enters