Iron+Folic Acid or Ferrous sulfate.

Hi mga mommies ask lang, kung magkaiba ba yung gamot na iron+folic acid at ferrous sulfate or same lang? Until when kaya iinumin yon yung iron+fa? Im 13 weeks and 5 days today then ang bagong nireseta sakin is multivitamins and ferrous sulfate na. Thank you!