I did quite a bit of research before I settled on these prenatals, but I chose them because the minerals are split out from the vitamins, which allows for better absorption. Also, I chose them because Metagenics is a superior, research-based, pharmaceutical-quality brand. There are seven pills in a packet: two vitamins, two minerals, one choline, and two fish oil. I prefer this as I can take them throughout the day, some with food and some without insuring proper absorption. Why spend the money on top quality vitamins when they aren't getting into your system?