Prenatal vitamins + Anmum milk

Does any expecting mummies here was prescribed 21st Century Prenatal vitamins and drinking Anmum Materna at the same time? I read the label that the vitamins already have 800mg of folic acid + some amount of the same in the anmum milk. Is too much folic acid good or dangerous for pregnancy? I still have ½ a packet of the milk powder & I was prescribed the vitamins today.