One Source Prenatal Vitamins worked excellently for me. I took them for about 3 months prior to conceiving my first child and then until he was about 15 months when I stiooed breast-feeding.  Taking them before bed helped any nauseous feelings they may have caused once I was pregnant.  I have not been able to find them and REALLY don't want to change my brand now that I am pregnant with my second child.  Also, as silly as it may sound, the pink color was much more soothing to look at rather than the typical 'vitamin-brown' of the new brand I am using!