What is it used for?
Ondansetron is used to prevent and treat nausea and vomiting, including those related to medical treatments such as chemotherapy or radiotherapy, and after surgery. The exact use depends on the prescriber's advice.
How does it work?
It blocks serotonin signals in the body that can trigger nausea and vomiting.
How to take/use it
Use exactly as prescribed or as directed on the label. The dose and duration depend on the cause of nausea or vomiting, age, and medical condition. Do not take extra doses or use it for longer than advised.
Common side effects
Headache, constipation, diarrhoea, dizziness, and tiredness.
Precautions
Tell the doctor about heart rhythm problems, congenital long-QT syndrome, liver disease, or low potassium or magnesium levels. Inform the doctor about all medicines being used, especially medicines that affect heart rhythm or serotonin levels. Seek urgent medical help for fainting, a fast or irregular heartbeat, severe allergic symptoms, or unusual agitation, sweating, fever, muscle stiffness, or tremors.
