From the Manufacturer:
Get a big boost of "the energy vitamin" with our fast-acting B-12 lozenges! Vitamin B-12 has always been associated with energy because of the role it plays in the production of the red blood cells that deliver oxygen to all parts of the body. It also supports cardiovascular health by working with folic acid to help control harmful homocysteine. Our sub-lingual lozenges supply a potent 1,000 mcg of vitamin B-12 fortified with 400 mcg of folic acid in a form that's taken up quickly by the body to go to work fast.