Vitamin B9 is one of eight water-soluble B vitamins. Folate is the naturally occurring form of vitamin B9 and folic acid is a synthetic folate compound used in vitamin supplements.
Vitamin B9 is has many functions within the body including energy production, blood cell formation and normal psychological function. Vitamin B9 can help prevent neural tube defects in the developing foetus.
The richest sources of vitamin B9 are liver, dark green leafy vegetables, beans, peanuts, wheat germ and yeast. Other sources are egg yolk, milk and dairy products, beets, orange juice and whole wheat bread.