There are a couple of anti-nausea prescription meds, but they're the same as over the counter. Ask your doctor. Make sure you specify that you might consider OTC meds. If you don't ask, it's pretty routine for a doctor to write a prescription, and you might not need it. One of the most commonly prescribed meds is Prilosec, in prescription strength. But OTC might work just as well. Talk to your doctor and nutritionist. They won't volunteer the information. Educate yourself and then weigh the risks.