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.

What Are the Most Common Antimalarial Side Effects?

Mary McMahon
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.

Common antimalarial side effects can include nausea, rashes, and intestinal upset. The specifics can depend on the type of medication a patient takes, the dosage, and the length of treatment. People use these medications prophylactically to prevent malaria infection while visiting regions with a high incidence of malaria-causing parasites, as well as to treat specific outbreaks of disease. Certain other conditions, including lupus, may be treated with antimalarials because they appear to provide some benefits.

Quinine is among the oldest and most well-known antimalarials. Patients may also take medications like doxycycline, chloroquine, or mefloquine, among others. The most appropriate option can depend on why the patient needs the medication, and they may be provided in combination therapies to combat resistance. Each medication comes with its own side effects and these can be worse in the case of a drug interaction with another medication.

Nausea, vomiting, and diarrhea can occur on some antimalarial medications. Other patients may report antimalarial side effects like headaches and blurred vision. Some medications have been known to cause tinnitus, a ringing sound in the ears. Rashes can also be an issue, along with ulcerations in the mouth. Some of these antimalarial side effects can become worse while traveling if the patient consumes contaminated food or gets stressed out, in which case physical or emotional stress may be confused with a medication reaction.

Psychiatric reactions are also documented antimalarial side effects. Some medications are associated with mood changes, including psychosis, hallucinations, and nightmares. Patients who notice changes in their mood or who feel unstable can contact a medical provider to get advice on how to proceed. It may be possible to change medications or doses to provide protection without the unwanted drug reaction. Counseling is also available to help people address specific issues that may arise.

Some antimalarial side effects can be so intense that patients want to discontinue the medication. This is not generally advised, because it can put them at risk of infection. If side effects are severe, patients should bring this up to determine if there is another drug available that can provide the same level of protection. Patients should also ask about what they should do if they vomit shortly after taking a dose, as the medication may not have a chance to spread into the bloodstream, in which case they may need a follow-up dose to ensure they get the benefit of the drug.

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.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGEEK researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments

Mary McMahon

Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
WiseGEEK, in your inbox

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

WiseGEEK, in your inbox

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