Ondansetron (injection)

Generic name: ondansetron (injection) [ on-DAN-se-tron ]
Brand name: Zofran
Dosage forms: injectable solution (2 mg/mL); intravenous solution (32 mg/50 mL-D5%)
Drug class:5HT3 receptor antagonists

Medically reviewed by Drugs.com on Oct 4, 2021. Written by Cerner Multum.

What is ondansetron?

Ondansetron blocks the actions of chemicals in the body that can trigger nausea and vomiting.

Ondansetron is used to prevent nausea and vomiting that may be caused by surgery or by medicine to treat cancer (chemotherapy).

Ondansetron may be used for purposes not listed in this medication guide.

Warnings

You should not use ondansetron if you are also using apomorphine (Apokyn).

Before taking this medicine

You should not use ondansetron if you are allergic to ondansetron, or if you are also using apomorphine (Apokyn).

To make sure ondansetron is safe for you, tell your doctor if you have:

• liver disease;

• heart disease, congestive heart failure, a heart rhythm disorder;

• an electrolyte imbalance (such as low levels of potassium or magnesium in your blood);

• a personal or family history of Long QT syndrome; or

• a condition for which you take a diuretic ...