This ondansetron disintegrating tablet can be taken alone or in combination with other medicines to treat nausea and vomiting brought on by cancer treatment and radiation therapy. Additionally, following surgery, nausea and vomiting are treated and prevented using this ondansetron disintegrating tablet. Ondansetron functions by preventing the body's natural chemical that triggers vomiting. The brain's CTZ receptor, which regulates nausea and vomiting, is stimulated when serotonin levels in the blood rise. To stop nausea and vomiting, ondansetron works by stopping the production of this serotonin.