We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

How Effective Is Ondansetron for Nausea?

By C.B. Fox
Updated May 17, 2024
Our promise to you
WiseGEEK is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGEEK, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Generally speaking, taking ondansetron for nausea will eliminate all symptoms for about a quarter of patients. There is no way to know whether this drug will be effective for a certain patient without trying it, so doctors may prescribe ondansetron for nausea and then observe the patient to see if it works. This drug is commonly given to adults and to children as young as four and is almost always tolerated well, even if it doesn't completely eliminate nausea.

Studies indicate that ondansetron can completely prevent nausea in about 25% of patients who take the drug after surgery. A larger percentage of patients will feel some relief when taking ondansetron for nausea, though it is difficult to determine exactly how effective odnansetron is in these patients. It is not known whether there is a difference in how well ondansetron works in patients of different ages or genders.

In the treatment of nausea related to cancer treatment, ondansetron is considered to be quite effective. Though many patients will not experience complete relief from nausea, as many as 70% of patients, depending on the type of treatment, do experience a significant decrease in the nausea normally experienced. In most of these cases, patients may feel queasy or vomit a couple of times in a day, especially on the first day after treatment, though symptoms may improve considerably after the first 24 hours.

The best way to determine whether ondansetron will be an effective cure for nausea is for a patient to try taking the drug under the observation of a doctor. It is usually prescribed to patients who have recently undergone surgery or for patients who are currently undergoing cancer treatment, so most patients who try ondansetron for nausea will be able to be observed by a doctor. In some cases, the drug may take effect in about 6 hours, while in other cases it may take 24 hours or more to determine whether it will work. If ondansetron is not effective for a particular patient, other anti-nausea medications are available.

Not all patients will respond favorably when given ondansetron for nausea. There are a number of serious side effects that can occur with its use, including dizziness, headache, weakness, or drowsiness. This medication may also cause diarrhea or constipation. Occasionally, patients may have an allergic reaction to the drug. A doctor should be notified immediately if there are signs of this, such as shortness of breath, hives, or loss of consciousness.

WiseGEEK is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGEEK, in your inbox

Our latest articles, guides, and more, delivered daily.