what is the purpose of b12 injections Are Shots Safe? Royal Palm Beach Medical Group Understanding the B12 Vitamin Shot:

Increased red blood cells enhance the oxygen carrying capacity of the blood therefore supporting aerobic performance

That said, signs or symptoms that you may be low in vitamin B12 include: fatigue pale skin headaches symptoms of depression stomach issues difficulty focusing or concentrating pain or inflammation in the mouth or on the tongue burning or pins and needles feeling in your hands or feet muscle cramps vision changes Learn more: Signs and symptoms of B12 deficiency

The effects of B12 shots will last a few weeks or even months, depending on your age and diet

B-6 (pyridoxine): Vitamin B6, also known as pyridoxine, helps your body process the amino acids that you get from food