I ran into the same problems with the mucus draining and causing nausea every time I would tube feed. I was usually vomiting anywhere from 2-4 times a day. They finally got me on Zofran and Riglan every 8 hours around the clock. The Riglan helps with keeping everything moving through the stomach. In addition, I had to use a pump for my feedings. It pumps the food in at a slow rate during the night. The only problem with this is you have to sleep at a 45-degree angle to make sure it does not bubble up during the night.