An antiemetic is a drug that is effective against vomiting and nausea. Antiemetics are typically used to treat motion sickness and the side effects of opioid analgesics, general anaesthetics, and chemotherapy directed against cancer.
Antiemetic drugs are prescribed to help with nausea and vomiting that are side effects of other drugs. This may include drugs for anesthesia used during surgeries or chemotherapy for cancer.
These drugs work by interfering with the neurotransmitter receptors involved in vomiting. Neurotransmitters are the cells that receive the signals to send a nerve impulse. The pathways that control these bodily reactions are complex. The type of antiemetic drug used will depend on the cause.