Marijuana is a currently accepted medical treatment for nausea and vomiting resulting from chemotherapy treatments in some cancer patients. The primary symptom of motion sickness is nausea. Nausea is often treated with anti-emetics for numerous illnesses, including motion sickness. Although there is insufficient scientific studies to confirm cannabis as a treatment for motion sickness, there is evidence to confirm cannabis as a viable treatment option for nausea.
From our observations, yes it can. We have seen that CBDA is really helping a lot of patients w/ nausea. Small amounts of 1:1 (CBD:THC), THC or THCA may also help. It can take a bit of experimenting to find what works best for you.