I had a really difficult time with prenatals in the beginning of my pregnancy. I ended up just taking a folic acid capsule each day, and taking a B-6 to help calm my stomach. I did that every day, and on some days would try the prenatal. After a while I was able to take the prenatal with food and was okay. I think your body actually works up to being used to it. At first, it is just so much to absorb. I switched prenatals about 3 or 4 times before I found one I really liked. My sister did the same thing, trying different ones, and we both have chosen the same prenatal to continue on with, and love it. If you want more information on what I have taken, ideas, etc... feel free to message me!!