I would say it all depends on the country you are in (I'm not asking you where you live). In my country, the antiemetics metoclopramide and domperidone are not recommended because in rare cases they can cause serious heart disease.
I ordered mine on an online pharmacy, I just had to answer a quiz.
If I hadn't been able to get them that way, I would have tried to go to my doctor and tell the truth because I really suffer from nausea and vomiting. I intended to say that I am prone to this very often: every week. It can appear in the morning on an empty stomach, after drinking tea, or just after eating, and also during certain car journeys I have motion sickness. I would have said that for motion sickness, the over-the-counter medications at the pharmacy work well but the nausea continues. Vomiting is rare, it is mainly nausea, which can happen in any circumstance. And that I heard about Motilium which seems very effective.