Hello i am currently around 4 weeks pregnant and taking prenatal vitamins, with folic acid 1mg can the folic acid help prevent miscarriage?

Folic acid: Folic acid helps decrease the risk of birth defects and does this best if it is started before pregnancy. Since severe birth defects are a common reason for miscarriages, it could possibly also decrease the risk of miscarriage. At any rate, the decrease in birth defects alone is a good reason to be taking it. Best wishes to you and the baby.