Why do you throw up after you take suboxone?

When I first started taking Suboxone (the first few days) I threw up a lot! I called my doctor and he said to not worry about it as this is very common in the first few days of taking Sub. Since it's dissolved under your tongue, once this is done, you can't "throw up" the meds, as they're already in your bloodstream. My doctor suggested laying down a bit, drinking a little 7-Up or Sprite and eating a few crackers to alleviate the nausea. This will pass as your body adjusts to the Sub. It took about three days for me though.