Nausea can be tricky to get a handle on. Once you become nauseous, its next to impossible to get ahead of it. I learned to take my nausea meds on schedule weather I felt like I was sick or not. Compazine gave me restless lag syndrome and made me a nervous wreck, pacing the floor so be careful with that one. Zofran worked for me. Maybe its a question about dosage not being strong enough. There are many drugs out there. Some work on the brain shutting down receptors that sense stomach discomfort while others work on the stomach acid, etc and treat the cause of irritation. I would definitely ask the doc for different meds to help get this in line. Nausea can lead to malnutrition and dehydration. Remember everything that comes out must be put back.