Dietary Supplement Support for the Nervous and Reproductive Systems Folic acid is used for the production of DNA and red blood cells, making it essential during pregnancy for normal fetal development. It supports brain and nervous system function, and benefits mental health. Folic acid is also needed for protein metabolism and may support cardiovascular health. All Natural Factors products are manufactured accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.