Ondansetron Hydrochloride provided by us, is intended to prevent nausea and vomiting produced by cancer drug treatment and radiation therapy. It can be taken alone or in combination with other treatments. It's also used to prevent and treat post-surgery nausea and vomiting. This prevents the body from producing substances that cause nausea and vomiting. Ondansetron Hydrochloride is a medication that is used to reduce nausea and vomiting caused by surgery, cancer chemotherapy, or radiation therapy. It is possible to take this medication with or without food.