b12 injection pain in arm hurts after Managing Post Injection After a Week Pain Due To Vitamin B12

In the United States, the Food and Drug Administration (FDA) has not approved the body protective compound for medical use, meaning it does not meet the agencys safety and efficacy standards

Watch for spreading redness, increasing pain, fever, or allergic signs

It is studied in animal models of tendon, ligament, GI and vascular healing (200+ PubMed publications)

Patients should be instructed to seek immediate medical attention for red-flag symptoms including intractable vomiting, severe dehydration, acute abdominal pain, gastrointestinal bleeding, or recurrent hypoglycemia, which may indicate surgical complications requiring urgent evaluation by the bariatric surgery team