Hi there. I've struggled a lot with nausea, though not actual vomiting except when pregnant. It seems to be part of GERD as I experience it. Taking my PPI at night reduced the morning nausea quite a lot. Acupuncture has also helped.
I tried Carafate and found it made my nausea worse!!
Have you tried keeping a food and symptom diary in case of food allergy or intolerance? Have you been tested for coeliac disease?
GERD (over 2 years)
Lifelong stuff: Food allergies/intolerance, eczema, asthma