<unk> , also known as vitamin B9 and<unk> acin, is one of the B vitamins. Manufactured<unk> ic acid, which is converted into<unk>  by the body, is used as a dietary supplement and in food fortification as it is more stable during processing and storage.<unk>  is required for the body to make DNA and RNA and metabolise amino acids necessary for cell division. As humans cannot make<unk> , it is required in the diet, making it an essential nutrient. It occurs naturally in many foods. The recommended adult daily intake of<unk>  in the U.S. is 400 micrograms from foods or dietary supplements.<unk>  in the form of<unk> ic acid is used to treat anemia caused by<unk>  deficiency.<unk> ic acid is also used as a supplement by women during pregnancy to reduce the risk of neural tube defects (NTDs) in the baby. Low levels in early pregnancy are believed to be the cause of more than half of babies born with NTDs. More than 80 countries use either mandatory or voluntary fortification of certain foods with<unk> ic acid as a measure to decrease the rate of NTDs. Long-term supplementation with relatively large amounts of<unk> ic acid is associated with a small reduction in the risk of stroke and an increased risk of prostate cancer. There are concerns that large amounts of supplemental<unk> ic acid can hide vitamin B12 deficiency. Not consuming enough<unk>  can lead to<unk>  deficiency. This may result in a type of anemia in which red blood cells become abnormally large. Symptoms may include feeling tired, heart palpitations, shortness of breath, open sores on the tongue, and changes in the color of the skin or hair.<unk>  deficiency in children may develop within a month of poor dietary intake. In adults, normal total body<unk>  is between 10 and 30 mg with blood levels of greater than 7 nmol/L (3 ng/mL).<unk>  was discovered between 1931 and 1943. It is on the World Health Organization's List of Essential Medicines. In 2019, it was the 89th most commonly prescribed medication in the United States, with more than 8million prescriptions. The term "folic" is from the Latin word (which means leaf) because it was found in dark-green leafy vegetables.
Folate
Iron
Calamine
Zinc
Tocopherol
Pantothenic acid
Biotin
Riboflavin