AYA Folic Acid 400mcg (90). Supporting Immune function Helping to reduce fatigue during pregnancy As a supplement pre–conception and in the early stage of pregnancy.. Folic Acid contributes to maternal tissue growth during pregnancy and has a role in body cell division and blood formation. It also supports immune function and may help reduce tiredness and fatigue.. Each capsule contains 400µg Folacin (Folic Acid). Women who are planning or who are in the early stages of pregnancy are advised to take this amount as a supplement daily.