Folic acid is a B vitamin that has a very important role in several vital activities of the body. First of all, folic acid is involved in the metabolism of nucleic acids and has a very important effect on the synthesis of DNA. In addition, folic acid has a great role in the hematopoietic system, promoting the functions related to red blood cells. With a deficiency of folic acid, the patient may develop anemia. In addition, folic acid also helps to reduce homocysteine in the body, and elevated levels of homocysteine may correlate with an increased risk of cardiovascular and cerebrovascular events in patients.