Question 1

What is Ondansetron used for?

Accepted Answer

Nausea, vomiting, vomiting caused by chemotherapy (cancer treatment), vomiting after surgery, vomiting from radiation therapy

Question 2

How do you take Ondansetron?

Accepted Answer

For adults, the usual dose is 4 mg to 8 mg taken by mouth two to three times daily depending on what your doctor prescribes. You can take it with or without food. If using the orally disintegrating tablet, place it on your tongue and let it dissolve — no need to swallow with water.

Question 3

What are the side effects of Ondansetron?

Accepted Answer

Headache, constipation (difficulty passing stool), feeling tired or dizzy, diarrhea

Question 4

Who should not take Ondansetron?

Accepted Answer

People who are allergic to ondansetron or any of its ingredients, people taking apomorphine, people with a heart condition called congenital long QT syndrome (a problem with the heart's electrical activity), and people with severe liver problems should avoid this drug or use it only under close medical supervision.

Question 5

Is Ondansetron safe during pregnancy?

Accepted Answer

Ondansetron should be used during pregnancy and breastfeeding only if your doctor says the benefit outweighs the risk — always consult your doctor before taking it if you are pregnant or nursing.

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