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
Several diseases (eg, heartworm disease
Limited human self-experiments note mild injection-site discomfort, brief headaches, and occasional nausea
We come to your home, office, or hotel
Yes, but it depends on the procedure and payer rules
If you find yourself getting sick more often than usual or having allergies where you previously had none, you may need a B12 shot