Antimalarial chemotherapy is crucial for reducing morbidity, mortality, and drug resistance, and is the cornerstone of malaria control. Existing antimalarial drugs act at different stages of the parasite’s life cycle. These drugs range from classic agents such as chloroquine and quinine to newer a...rtemisinin derivatives. They include tissue schizonticides, blood schizonticides, gametocytocides, and sporontocides. Artemisinin and its derivatives are the most effective and fastest-acting treatment against drug-resistant Plasmodium falciparum, achieving rapid parasite clearance and reducing transmission potential. Other key drugs include mefloquine, halofantrine, proguanil, sulfadoxine–pyrimethamine, atovaquone–proguanil, tetracyclines, clindamycin and azithromycin. Each of these drugs has a specific mechanism of action, pharmacokinetics, efficacy, safety profile and contraindications. Rational drug combinations and adherence to national treatment guidelines are essential for managing resistance, ensuring safety in vulnerable populations such as children and pregnant women, and optimising therapeutic outcomes in cases of both uncomplicated and severe malaria.
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Antimalarial drug resistance has emerged as a threat to global malaria control efforts, particularly in the Greater Mekong subregion. Drawing on data collected through more than 1000 therapeutic efficacy studies as well as molecular marker studies of Plasmodium falciparum drug resistance, the Report... on antimalarial drug efficacy, resistance and response: 10 years of surveillance (2010–2019) presents a decade’s worth of data on drug efficacy and surveillance, as well as recommendations to monitor and protect the efficacy of malaria treatment in the decades to come.
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Master of Science in Pharmaceutical Management Dissertation
The webpage from Medicines for Malaria Venture (MMV) focuses on efforts to develop and provide child-friendly antimalarial treatments. It highlights the challenges of treating malaria in children, who are among the most vulnerable to the disease, and the need for safe, effective, and easy-to-adminis...ter formulations. MMV collaborates with global partners to ensure access to pediatric antimalarial medicines, such as dispersible tablets and rectal treatments, especially in low-resource settings. The page emphasizes the importance of innovation, accessibility, and partnerships in reducing childhood malaria mortality.
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EXPERT OPINION ON DRUG SAFETY 2018, VOL. 17, NO. 11, 1129–1144.
Malaria during and after pregnancy contributes significantly to maternal mortality and adverse fetal outcomes. While effective and safe antimalarial treatments are essential, quinine — an older, less effective drug — has long bee...n favoured due to the limited safety data available on newer drugs. This review summarises the results of human studies investigating the safety and efficacy of antimalarial drugs during pregnancy and lactation.
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Infection and Drug Resistance 2020:13 4047–4060
Launch of the WHO Report on antimalarial drug efficacy, resistance and response: 10 years of surveillance (2010–2019). Key findings
The Strategy to respond to antimalarial drug resistance in Africa is a technical and advocacy document, grounded in the best available evidence to date and aimed at minimizing the threat and impact of antimalarial drug resistance of Plasmodium falciparum parasites in Africa. Its objectives are to: i...) improve the detection of resistance to ensure a timely response; ii) delay the emergence of resistance to artemisinin and artemisinin-based combination therapy (ACT) partner drugs; and iii) limit the selection and spread of resistant parasites where resistance has been confirmed.
WHO Team
Global Malaria Programme
Editors
World Health Organization
Number of pages
87
Reference numbers
ISBN: 978 92 4 006026 5
Copyright
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Meeting report, Kampala, Uganda,
7–8 November 2023
In November 2022, WHO launched a strategy to address antimalarial drug resistance in Africa, emphasizing the need for stronger surveillance. While regional monitoring networks have been active in other regions, most in Africa have not convened since 2017–2018. To renew collaboration, WHO organized... a meeting bringing together countries from the African and Eastern Mediterranean regions. Participants shared recent data on antimalarial efficacy and resistance. While artemisinin-based combination therapies remain highly effective, some sites in Uganda and the United Republic of Tanzania reported lower-than-expected efficacy of artemether–lumefantrine. Delayed parasite clearance linked to Plasmodium falciparum Kelch-13 mutations was noted in Eritrea, Rwanda, Uganda and the United Republic of Tanzania. Discussions highlighted challenges in therapeutic efficacy studies, molecular marker surveillance and the need for improved genotyping to distinguish relapses from new infections.
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WHO recommends artemisinin-based combination therapies for treating uncomplicated malaria, alongside studies to monitor treatment effectiveness. Given the threat of antimalarial resistance, including partial resistance in several African countries, molecular tools are vital for tracking resistance. ...In 2015, WHO launched the External Quality Assessment scheme for nucleic acid amplification testing to ensure reliable lab results. Coordinated by WHO and operated by the United Kingdom National External Quality Assessment Service for Parasitology, the scheme provides quality-controlled specimens and reports to help improve testing accuracy. Experts recently discussed expanding the scheme to include antimalarial resistance markers.
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Effective malaria case management requires quick access to diagnostics and antimalarial treatments to reduce illness and death. Artemisinin-based combination therapy (ACT) has been essential to malaria treatment since 2001, as it combines artemisinin for rapid parasite reduction with a partner drug ...to ensure complete cure. However, resistance to antimalarial drugs, where parasites survive standard doses, threatens malaria control.
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The Global Programme to Eliminate Lymphatic Filariasis (LF) is using mass drug administration (MDA) of antifilarial medications to treat filarial infections, prevent disease and interrupt transmission. Almost 500 million people receive these medications each year. Clinical trials have recently shown... that a single dose of a triple-drug combination comprised of ivermectin, diethylcarbamazine and albendazole (IDA) is dramatically superior to widely used two-drug combinations for clearing larval filarial parasites from the blood of infected persons. A large mul-
ticenter community study showed that IDA was well-tolerated when it was provided as MDA. IDA was rapidly advanced from clinical trial to policy and implementation; it has the potential to accelerate LF elimination in many endemic countries.
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Combination therapy is a cornerstone of modern malaria treatment, particularly in the context of widespread multidrug resistance. Using two or more antimalarial drugs with different mechanisms simultaneously enhances efficacy, shortens treatment duration, improves compliance and delays the developme...nt of resistance. Artemisinin-based combination therapies (ACTs), such as artemether–lumefantrine, artesunate–amodiaquine and artesunate–sulfadoxine/pyrimethamine, are highly effective in rapidly clearing parasites and reducing gametocyte carriage. They are also generally well tolerated. Non-artemisinin combinations, quinine-based regimens and novel combinations (e.g. piperaquine–dihydroartemisinin) offer alternative therapeutic options, although clinical experience with these remains limited. Although ACTs are the preferred first-line treatment, factors such as cost, local drug resistance patterns, safety during pregnancy and paediatric use must inform implementation and policy decisions.
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The WorldWide Antimalarial Resistance Network (WWARN) is a global collaborative platform that provides the malaria community with innovative tools and reliable evidence to help them understand and address antimalarial drug resistance. Using molecular surveyors and mapping tools, WWARN visualises the... evolution and geographical spread of resistance to key antimalarial drugs.
Accessed June 2025
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Efficacious antimalarial medicines are critical to malaria control and elimination. Continuous monitoring of their efficacy is needed to inform treatment policies in malaria-endemic countries, and to ensure early detection of, and response to, drug resistance.
9 June 2021
Since its launch, GLASS has expanded in scope and coverage and as of May 2021, 109 countries and territories worldwide have enrolled in GLASS. A key new component in GLASS is the inclusion of antimicrobial consumption (AMC) surveillance at the national level highlighted in this fourth G...LASS report.
The fourth GLASS report summarizes the 2019 data reported to WHO in 2020. It includes data on AMC surveillance from 15 countries and AMR data on 3 106 602 laboratory-confirmed infections reported by 24 803 surveillance sites in 70 countries, compared to the 507 923 infections and 729 surveillance sites reporting to the first data call in 2017.
The report also describes developments over the past years of GLASS and other AMR surveillance programmes led by WHO, including resistance to anti-human immunodeficiency virus and anti-tuberculosis medicines, antimalarial drug efficacy.
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The WHO Malaria Threats Map is an interactive online platform that showcases the latest global data on four critical biological threats to effective malaria control and elimination: mosquito insecticide resistance, Plasmodium falciparum hrp2/3 gene deletions, antimalarial drug resistance, and the ...spread of invasive vector species. Designed for public health professionals and researchers, the map allows users to explore and filter data regionally, track emerging resistance patterns, and view visual trends. Its purpose is to inform strategies for surveillance, guide policy-making, and support efforts to eliminate malaria, particularly by anticipating and responding to biological challenges that could undermine control programs.
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