A member asked:

How long does a typical 4mg pill of zofran (ondansetron) take to start working on nausea due to gastroenteritis. taken at the onset of symptoms, before any vomiting?

A doctor has provided 1 answer
Dr. Sue Ferranti answered

Specializes in Internal Medicine

Typically....: It usually begins to start relieving nausea within 30-60 minutes. Hopefully, you will get relief and not begin vomitting. If it doesn't help and/or your symptoms worsen, get back in touch with your doctor. Good luck!!

Answered 5/24/2020

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