The usual adult dose of Zofran (ondansetron) is typically 8 mg every 8 to 12 hours, which means it can be taken 2 to 3 times a day. In some cases, it may be taken every 6 hours, but the total dose within that period should not exceed the recommended amount. The dosing schedule depends on the reason for taking the medication (e.g., chemotherapy, radiation therapy, post-surgery) and individual health factors. After completing treatment, Zofran is often continued for 1 to 2 days as needed. It is important to follow the doctor's prescription precisely and not take more frequently than directed, as frequent doses can increase the risk of side effects like QT prolongation (a heart rhythm issue). Here is a summary of the typical dosing frequency for adults:
- Every 8 to 12 hours (2-3 times a day) during chemotherapy or radiation.
- Possibly every 6 hours if recommended, but carefully managed.
- Usually continued for 1 to 2 days after treatment ends.
For children, dosing is based on age and weight and usually follows a specific schedule around treatment times. Always consult a healthcare provider for personalized advice and dosing schedules to avoid overdose or complications.
