Malaria is treated with antimalarial drugs, and the specific medication depends on the type of malaria parasite involved, how severe the infection is, and where the person was infected. Most uncomplicated cases are treated with a three-day course of oral combination therapy and resolve within a week. Severe malaria requires hospitalization and intravenous medication.
First-Line Treatment for Uncomplicated Malaria
The standard treatment for uncomplicated malaria caused by the most dangerous species, P. falciparum, is artemisinin-based combination therapy, commonly called ACT. These medications pair a fast-acting compound derived from the sweet wormwood plant with a longer-lasting partner drug that clears remaining parasites from the blood. The most widely used combination is artemether-lumefantrine, sold under the brand name Coartem.
The treatment follows a three-day schedule. On the first day, you take an initial dose and a second dose eight hours later. On days two and three, you take one dose in the morning and one in the evening. Adults take four tablets per dose. Children receive fewer tablets based on body weight: one tablet per dose for children under 15 kg, two for 15 to 25 kg, and three for 25 to 35 kg. Each dose should be taken with food, which significantly improves how well the body absorbs the medication.
Another reliable option is atovaquone-proguanil. Both artemether-lumefantrine and atovaquone-proguanil are available for self-treatment when prescribed in advance for travelers heading to malaria-endemic regions.
How Severe Malaria Is Treated
Severe malaria is a medical emergency. Signs include confusion or loss of consciousness, severe anemia, kidney failure, difficulty breathing, shock, and high parasite levels in the blood. Anyone showing these symptoms needs immediate hospital treatment regardless of which malaria species is involved.
The cornerstone of severe malaria treatment is intravenous artesunate, which clears parasites from the bloodstream faster than any other antimalarial. It is given at 0, 12, and 24 hours after admission, then once daily until the patient can swallow oral medication. At that point, treatment transitions to a full oral course of combination therapy to finish clearing the infection.
For young children in remote areas where getting to a hospital takes time, rectal artesunate suppositories serve as a critical bridge treatment. The WHO recommends this for children under six with suspected severe malaria when intravenous treatment isn’t immediately available. This pre-referral dose reduces the risk of death or permanent disability by up to 50%, provided the child reaches a facility where full treatment can be given.
Managing Fever and Dehydration
Malaria causes intense cyclical fevers, body aches, and dehydration, all of which need attention alongside the antimalarial drugs. Paracetamol (acetaminophen) and ibuprofen are both recommended for bringing down fever and relieving pain. Sponging with lukewarm water can help, particularly when combined with fever-reducing medication. Cold water or ice baths should be avoided because they can cause shivering, which actually raises body temperature.
Staying well-hydrated is essential. Malaria fevers cause significant fluid loss through sweating, and vomiting or diarrhea can compound the problem. Oral rehydration solutions or clear fluids should be taken consistently throughout the illness. In severe cases, intravenous fluids are given in the hospital.
Preventing Relapse With Liver-Stage Treatment
Two malaria species, P. vivax and P. ovale, have a trick that other types don’t: they can hide dormant forms called hypnozoites in the liver. These dormant parasites can reactivate weeks or even months after the initial infection, causing a full relapse. Killing the parasites in the blood isn’t enough. You also need a drug that reaches the liver.
The traditional option is primaquine, taken daily for 14 days. A newer alternative, tafenoquine (Krintafel), accomplishes the same goal with a single 300 mg dose, which is far more convenient. Tafenoquine is approved for people aged 16 and older for P. vivax and is also used off-label for P. ovale.
Both drugs carry a serious risk for people with a genetic condition called G6PD deficiency, which affects roughly 400 million people worldwide, particularly those of African, Mediterranean, Middle Eastern, and Southeast Asian descent. In people with this enzyme deficiency, primaquine and tafenoquine cause red blood cells to break apart rapidly, a condition called hemolytic anemia that can be life-threatening. Quantitative G6PD testing is mandatory before either drug is prescribed. For people who do have G6PD deficiency, a modified primaquine regimen of once-weekly dosing over eight weeks under close medical supervision is sometimes used as an alternative.
Treatment During Pregnancy
Malaria during pregnancy is particularly dangerous, increasing the risk of severe anemia, premature birth, and low birth weight. For the second and third trimesters, artemisinin-based combination therapy has been the recommended treatment since 2006. The bigger question has historically been the first trimester, when fetal development is most sensitive to medication effects.
Based on a WHO evidence review completed in 2022, artemether-lumefantrine is now the preferred treatment for uncomplicated P. falciparum malaria during the first trimester as well. It has the most human safety data of any ACT option. Tafenoquine, by contrast, is contraindicated in pregnancy because there is no way to test the fetus for G6PD deficiency.
Drug Resistance and Why Location Matters
Where you contracted malaria directly affects which drugs will work. Partial resistance to artemisinin-based treatments has spread widely across Southeast Asia over the past two decades, and as of 2024, it has emerged in East Africa. This resistance doesn’t mean ACTs fail entirely, but it slows parasite clearance and can reduce cure rates when the partner drug is also weakened.
This is one reason treatment decisions should always factor in the geographic origin of the infection. Clinicians use regional resistance data to choose the most effective drug combination. If you’re being treated for malaria, make sure your healthcare provider knows exactly where you traveled.
What Recovery Looks Like
With effective treatment for uncomplicated malaria, fever typically breaks within 24 to 48 hours, and most people feel significantly better within three to four days. Fatigue and mild weakness can linger for a week or two. Blood tests are repeated during and after treatment to confirm parasites are being cleared and to watch for recurrence.
Severe malaria has a longer recovery arc. Patients may spend several days in the hospital, and complications like anemia or kidney problems can take weeks to fully resolve. Even after completing treatment, follow-up blood smears are important to confirm the infection is gone, particularly for P. vivax and P. ovale, where liver-stage parasites can cause relapse if not properly treated.