A 23-year-old female asked:
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how many 4mg zofran (ondansetron) can i take in 24 hours? i have taken 4-5 daily.. well every 4-6 hours.

1 doctor answer
Dr. Donald Alves
23 years experience Emergency Medicine
Safe: If you are not having any side effects, that is fine. In cancer patients, very high doses are used safely, and 8mg every 6hrs is not uncommonly prescribed. If having persistent symptoms, may benefit from discussion w/your dr and /or GI evaluation.
Answered on Jan 14, 2020

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