As with headache, distinguishing treatment-related fatigue from background symptoms in obese populations with potential sleep disorders presents methodological challenges
The dose-response relationship in the discontinuation data is the practical takeaway
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
By binding to receptors in the brain, it actively dampens the central nervous system's food cravings, calms obsessive thoughts about food, and slows stomach motility so you remain full on substantially smaller portions