do b12 injections cause headaches I've had a migraine since Sept 4th. I took a injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Vitamin B12 Injection Side Effects

Food and Drug Administration for weight management or any other medical purpose

Delayed Treatment: Masking symptoms while the neurological damage progresses

Some of the serious side effects of Vitamin B12 include serous allergic reaction, narrowing or blocking of blood vessels, thrombocytosis (a disorder where your body produces too many platelets), low potassium levels in body, pulmonary edema (a condition where there is excess fluid in the lungs) and congestive heart failure

Just ensure that you pinch the skin if the injection site is too lean

Some people feel their best with weekly shots, especially if they have a demanding lifestyle, while others find a monthly visit is perfect for maintaining their energy levels and mental clarity

This is not a medication marketed for dramatic standalone weight loss