I think the spit up problem has to do with over supply. There was a day, that my breast were really full with milk and my baby drank alot. After words he had a big spit up. It maybe that you just don't need to take the supplement. You may be starting an oversupply issue and inadvertently causing the spit up problem. I take mothers tea at work and drink it a half an hour before a pump and it gives me an extra ounce. But that is the only time I take mothers tea. If I drank it at night or the weekends, I was afraid of overfeeding my son due to the increased supply. I only drink the tea at work, when I am getting ready to pump.