Not getting enough Vitamin B12, MegaFood Extra Strength Methyl B12 offers support for energy metabolism as well as cognitive and nervous system health. Offering 3000 mcg of Vitamin B 12 per serving, this formula helps convert food into cellular energy and supports normal red blood cell formation, brain and nervous system function, healthy mindset (1), and healthy aging. This supplement can also help reduce fatigue for those low in B-12 Vitamin. Vitamin B12 is important for vegetarians and who may not get enough.