Do they have an idea what's causing the nausea, instead of just treating the symptoms? Is there something that triggers the nausea like smell, eating, time of day, medications, stress? Mine was due to several reasons..opiod medications, like oxycodene, made me vomit, but when I switched to a Fetynal patch it reduced. Switching pain meds or by tube instead of oral route may help. Taking medications with food helped me, not on an empty stomach, and not too much water at once. Not lying down immediately after drinking or eating. When rising from a prone position, doing it slow, and sitting for a few minutes before standing helped. Spacing my tube feedings, and smaller helped, but keep up on the nutrition intake, and keeping on a feeding schedule. Constipation, which can be from opiods, can cause vomiiting. Vomitying can cause malnutrition, takes lots of energy, so maybe see a nutritionist, and pain management. Hope this helps.