Liquids, melts/dissolves etc are helpful, they told us for the first few weeks, no pills larger than an m+m. Water also starts to just empty through not long after surgery, so if you get lucky you shouldn't have any issues with water intake. I had no problems taking any of my numerous pills. Think of it like this, you've got a tube connected to a sphere connected to another tube. If you pour the water in as the same rate it flows out... you can pour as much as you want until the lower tube fills up. If you pour too quickly, you get the back up since the water input is faster than the water exiting. If the pills are small, they will flow though the pouch pretty quickly as well. Just take them 1 at a time and sip the water. Swelling with cause some restriction, but if you start drinking super slowly, see how much you can get in when taking tiny, constant sips, then slowly increase the input until you notice it starting to back up, then slow down a bit and it should go away. This way you'll figure out what your throughput is and you'll know the speed at which you can consume liquids without back up.