How much is the max amount of folic acid to take for Prenatal?

Hi All e mummies! I am currently taking Swisse Ultinatal Preconception & pregnancy prenatal (consists of 500mcg folic acid) + 5mg folic acid prescribed by gynae. Is there such thing as too high dose of folic acid or that's fine?? *I am currently preparing for pregnancy via IVF. Thanks in advance! :)