I took Blackmores Pre-Conception Gold for months before we conceived and because I have Spina Bifida Oculta I also took extra Folate on top of that. But my Dr said that after the 3rd month the extra folate would not be needed anymore either. Obviously I still took my pregnancy supplement that has folate in it anyway so far everything seems to be alright with bub. I thought your body just expelled what it didn't need anyway, so makes you think what would the harm be?