My doc prescribed it because I have the MTHFR gene mutation (homozygous C776T), but after having my homocystine levels checked I decided to skip the blood thinners and take methyl folate (MTHFR causes problems with the body methylating folate), b6 and b12. My homocystine was perfect so I didn't want to possibly complicate the birth just because of a mutation that wasn't actually causing problems. We will check homocystine levels periodically throughout the pregnancy and if there are changes I'll start the meds. I'm a surrogate and my intended mothers really want a homebirth, so as long as I'm methylating properly we don't want to complicate things.