pain after b12 injection Shots in Friso, Sherman, Anna. and Sunnyvale, TX Vitamin B12 Injection Side Effects

Also, people who use certain medications, such as proton pump inhibitors (PPIs), for a long time can suffer from low B12 levels due to poor absorption and bacterial overgrowth in the small intestine

OCs, which are fundamental to bone remodeling, are affected by CD38 inhibition, which not only inhibits bone resorption [41] but also restores T-cell function, thereby averting the progression of bone disease [42]

Thanks If my memory serves me well I believe you would need about 10mls of air direct into a vein to cause an air embolism so I wouldnt worry about a tiny amount re subcutaneous and IM

Summary: Potential Risk Factors of Vitamin B12 Overdose A vitamin B12 overdose, resulting in blood levels above the reference range, is called hypercobalaminemia