Vitamin B12 injections are generally safe, but some people may experience side effects, such as pain, redness, or swelling at the injection site, mild headaches, dizziness, nausea, or itching
Key markers include fasting glucose and insulin (to assess insulin sensitivity), HbA1c (long-term glucose regulation), lipid panel (triglycerides, HDL, LDL), resting metabolic rate via indirect calorimetry, and body composition via DEXA scan (to differentiate fat loss from lean mass changes)
Lifestyle modifications are fundamental in managing autoimmune disease
Monitor for unusual symptoms Pay attention to any changes in the 24-48 hours after injection
[DOI] [PubMed] [Google Scholar] 239.Ilic S., Drmic D., Zarkovic K., Kolenc D., Coric M., Brcic L., Klicek R., Radic B., Sever M., Djuzel V., et al