antiemetic
adjective
an·ti·emet·ic ˌan-tē-i-ˈme-tik 
ˌan-tī-
: used or tending to prevent or relieve nausea and vomiting
antiemetic drugs used in conjunction with chemotherapy
antiemetic noun
an over-the-counter antiemetic to treat motion sickness
Example Sentences
Recent Examples on the Web Most conventional antiemetic products have fairly mild side effects, but also tend to offer limited relief for treating nausea and are not effective for all patients. 
Javier Hasse, Forbes, 6 May 2021 And if that doesn’t do the trick, your doctor may recommend taking an antiemetic drug to help prevent vomiting. Korin Miller, SELF, 6 Nov. 2018 The agency also warns about the risks of taking opioids with antiemetic medications (such as ondansetron) and other serotinergic drugs (such as St. John's wort). Tessie Castillo, SELF, 6 Mar. 2018
Javier Hasse, Forbes, 6 May 2021 And if that doesn’t do the trick, your doctor may recommend taking an antiemetic drug to help prevent vomiting. Korin Miller, SELF, 6 Nov. 2018 The agency also warns about the risks of taking opioids with antiemetic medications (such as ondansetron) and other serotinergic drugs (such as St. John's wort). Tessie Castillo, SELF, 6 Mar. 2018 Word History
First Known Use
1679, in the meaning defined above
Medical Definition
antiemetic 1 of 2
adjective
an·ti·emet·ic ˌant-ē-ə-ˈmet-ik, ˌan-ˌtī-
: used or tending to prevent or relieve nausea and vomiting
antiemetic drugs
antiemetic
2 of 2noun
: an agent used to prevent or relieve nausea and vomiting
an over-the-counter antiemetic to treat motion sickness