Wow. I find it so intriguing to see what everyone else is taking. Mine is very simple, not too much to add...
Prenatal
800 mcg folic acid (also 800 mcg in prenatal so that's 1600 total for the day)
99 mg potassium 1x day
1000 mg fish oil 1x day
Then I'm doing a fairly strict diet (low calcium, high potassium, high sodium, high protein) plus LOTS of lemon water.