I had many complications that contributed to nausea and this is how I approached it.
The Ethiol shot I got made me nausious. So I didn't feel like eating which is a mistake. An empty stomach makes it much easier for nausea to take hold. What worked for me is to always have something in my stomach, which meant eating and drinking something every 3 hours while awake. When I figured this out, I was already on a PEG tube so I was dumping a can of Ensure, followed by water, every 3 hours to make sure something was in my stomach. This also had the side benefit of forcing a feeding schedule to regulate energy.
I still had to take a pill every once in a while but for the most part, my plan worked.
Jim