Background: Vitamin B9, also known as folate, is a water soluble vitamin found in vegetables, fruits and animal products that plays a key role in purine and pyrimidine synthesis, nucleoprotein synthesis and erythropoiesis. Deficiency can result from malabsorption, anti-epileptic and methotrexate use, pregnancy, hemolytic anemic, and alcoholism and is implicated in neural tube defects. Signs [...]