Prenate Pixie

Does anyone else use these prenatals? What is your opinion on them. I got a ton of samples of different prenatal vitamins from my doctor and these were the easiest by far to get down with my nausea and vomiting. I'm looking at the label and it doesn't have as high amounts of stuff as the mini's. Confused as to why. There's no calcium either but I'm sure I get enough calcium and all in my diet.