Why pronutrition vitamin b-12 is best. Why pronutrition vitamin b-12 is best. Cynocobalamin is the inactive form of vitamin b12 where as methylcobalamin is the active form of vitamin b12. Cynocobalamin is found in various food sources, but once consumed the body needs to convert it to methylcobalamin. Methylcobalamin has a methyl group just carbon and hydrogen while cyanocobalamin contains a cyanide molecule. Although the amount of cyanide in is too small, your body will still need to remove and eliminate this compound. As it has no use for the cyano-compound itself, it will set about converting any cyanocobalamin you take into methylcobalamin as soon as possible - it requires the methyl. What is the dosage per serving. Vitamin b12 as methylcobalamin and alfalfa powder a supplement you can take with confidence - pronutrition is proudly made in an fda inspected facility. We stand behind our vitamin b-12 supplement and are proud to have the best formula on the market effective source of vitamin b-12 this pronutrition supplement is rich in vitamin b12 that comes with several properties. It is needed for nerve tissue health, and production of red blood cells. Deficiency of vitamin b12 can result in irreversible and potentially severe damage, especially to the nervous system. Helps promote better sleep b12 plays a vital role in melatonin production. Melatonin has been called the sleep hormone because it is responsible for letting you get a good nights sleep. This indicates that a proper intake of vitamin b12 can help improve your sleep pattern and thereby reduce your fatigue.