vitamin b12 injection site Injections at Home - Safety Guide for Self-Administration B12 vitamin Store How to

How quickly will I feel the effects, and how long do they last

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

Vitamin B12 injections are a safe and effective way to treat B12 deficiency, and we commonly recommend them for patients who have trouble absorbing this essential vitamin from food or oral supplements

Possible temporary reactions include: Mild soreness at the injection site Nausea, headache or dizziness for a day or two Occasional minor bruising Serious side effects are very rare

What does a B12 shot do