But, some might feel: Pain, redness, or swelling at the injection site Mild diarrhea or itching Headaches or fatigue These issues are usually mild and go away quickly without needing a doctor
Why Do B12 Shots Require a Prescription
At baseline and at weeks 8 and 12, a clinician should assess fasting insulin and HOMA-IR (the homeostasis model assessment of insulin resistance, a calculated index derived from fasting glucose and insulin), HbA1c, high-sensitivity C-reactive protein as an inflammatory marker, and body composition by DEXA scan or bioelectrical impedance
Rotate sites with each injection to prevent lipodystrophy, the hardening of tissue that repeated injections in the same spot can cause
Risks and Possible Side Effects Vitamin B12 injections are generally very safe when administered appropriately