Another prescription drug that is sometimes given for motion sickness is ondansetron (Zofran), which was originally developed to treat nausea associated with cancer chemotherapy.
Other drugs that have been developed to treat postoperative or post-chemotherapy nausea and vomiting include ondansetron (Zofran) and granisetron (Kytril).
Drugs that have been found to work well as abortive agents are ondansetron (Zofran, an antinausea drug) and sumatriptan (Imitrex, an antimigraine drug).
M., et al. "A Comparison of Cyclizine, Ondansetron, and Placebo as Prophylaxis against Postoperative Nausea and Vomiting in Children."
Einarson, A., et al. "The safety of ondansetron for nausea and vomiting of pregnancy: a prospective comparative study."