This medication is used
alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation
therapy. It is also used to prevent and treat nausea and vomiting after surgery. It works by blocking one of the body's natural substances (serotonin) that causes vomiting.
How to
use Zofran
To prevent nausea from chemotherapy, take this medication by mouth usually within 30 minutes before treatment begins. To prevent nausea from radiation treatment, take this medication by mouth 1 to 2 hours before the start of your treatment. To prevent nausea after surgery, take ondansetron by mouth 1 hour before the start of surgery. This medication
may be taken with or without food. However, your
doctor may tell you not to eat before chemotherap