Retrieved March 15, 2025, from U.S
: Passive absorption Treatment IM iron There are many recommended schedules for injections of vitamin B 12 (called cyanocobalamin in the United States and hydroxocobalamin in Europe)
The reduced food intake that comes with appetite suppression adds another layer
In rare situations, B12 shots itching rash anaphylaxis, a life threatening condition that can cause a fast heartbeat and difficulty breathing Other side effects that can occur include: shortness of breath, fast weight gain, and swelling congestive heart failure, the inability of the heart to adequately pump blood pulmonary edema, the buildup of fluid in the lungs peripheral vascular thrombosis, the obstruction of a vein with a blood clot hypokalemia, low potassium levels that can cause irregular heartbeats and muscle weakness fever tingling, numbness, and joint pain swollen tongue polycythemia, an increase in the red blood cell mass Additionally, B12 B12 shots are not necessary for weight loss
This is normal
People often believe theyll act as a safety net and help to ensure adequate nutrient intake