how often can you take zofran

6 hours ago 5
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You can take Zofran (ondansetron) typically up to 3 times a day , which means every 8 hours, depending on your doctor's prescription and the reason for use. For adults, the usual oral dose is 8 mg every 8 to 12 hours (2 to 3 times daily). In some cases, it may be taken every 6 hours, but the total dose should not exceed 8 mg within that period.

  • For chemotherapy-related nausea, typical dosing is 8 mg 30 minutes before chemotherapy, then another 8 mg 8 hours later, followed by 8 mg every 12 hours for 1 to 2 days after chemotherapy.
  • For radiation therapy, 8 mg is taken 1 to 2 hours before treatment, then every 8 hours as needed.
  • For postoperative nausea, a single 16 mg dose is usually given 1 hour before anesthesia.

Do not take it more frequently than prescribed due to risks such as heart rhythm abnormalities (QT prolongation). Always follow your healthcare provider's instructions on dosing and frequency, and consult them if your symptoms are not controlled or if you are unsure about the schedule. In summary, Zofran is most commonly taken 3 times a day (every 8 hours) , but dosing can vary based on the situation and should not exceed the prescribed amount.