Malaria treatment starts with antimalarial drugs, usually taken by mouth at home
The standard treatment for malaria is an antimalarial medication—a drug that kills the parasite in your blood. Most people take these drugs orally (by mouth) for three to seven days, depending on which drug and which type of malaria you have. The goal is to clear the parasite from your system before it causes organ damage or severe anemia.
Your doctor chooses the drug based on which malaria parasite you carry, where you caught it, and whether the parasite in that region is resistant to certain drugs. Chloroquine, artemisinin-based combination therapies (ACTs), and atovaquone-proguanil are the most common choices. If you caught malaria in a region where the parasite resists one drug, your doctor will prescribe a different one.
Treatment works fastest when started early—within the first few days of fever. If you wait longer, the parasite multiplies and the illness becomes harder to treat. This is why getting tested and starting medication quickly matters.
Key Takeaways
- Antimalarial drugs taken by mouth for three to seven days are the main treatment, and which drug you receive depends on the parasite type and regional drug resistance patterns.
- Severe malaria requires hospital admission, IV medications, and close monitoring because the parasite can damage your brain, kidneys, or lungs within hours.
- Treatment works best when started within the first few days of fever, so early testing and diagnosis directly affect how quickly you recover.
- Side effects from antimalarial drugs are usually mild—nausea, headache, or dizziness—and stop once you finish the course.
- If you do not improve within 48 hours of starting treatment, tell your doctor immediately, as this can signal drug resistance or a different illness.
When malaria requires hospital admission and IV treatment
Severe malaria—when the parasite damages your brain, kidneys, lungs, or blood—requires hospital admission and intravenous (IV) antimalarial drugs. Signs of severe malaria include confusion, loss of consciousness, seizures, severe anemia, kidney failure, or difficulty breathing. If you have any of these, go to an emergency room or call an ambulance.
In the hospital, you receive IV artesunate, which is faster and more effective than oral drugs for severe cases. Doctors also treat complications: blood transfusions for severe anemia, dialysis for kidney failure, or breathing support if your lungs are affected. You stay in the hospital until the parasite is cleared and your organs begin to recover, usually five to ten days.
Severe malaria is a medical emergency. Without treatment, it can cause permanent brain damage, organ failure, or death within days. If you have traveled to a malaria region and develop high fever, confusion, or difficulty breathing, seek emergency care immediately.
Common antimalarial drugs and how they work
Artemisinin-based combination therapies (ACTs) are the first choice in most malaria-endemic countries. These combine artemisinin—a fast-acting drug derived from a plant—with a partner drug that works more slowly. The combination kills the parasite at different life stages, reducing the chance of resistance. Examples include artemether-lumefantrine and artesunate-amodiaquine. You take these for three days, usually as tablets or injections.
Chloroquine is still used in some regions where the parasite has not developed resistance, mainly in Central America and parts of the Middle East. It is inexpensive and has been used for decades. However, in Africa and Southeast Asia, most malaria parasites are now resistant to chloroquine, so it is no longer effective there.
Atovaquone-proguanil (Malarone) is commonly prescribed in developed countries and is taken for three days. It works well against most parasite types but is more expensive than ACTs. Quinine and quinidine are older drugs reserved for severe cases when other options are not available or have failed.
What happens during the first 48 hours of treatment
After you start antimalarial medication, your fever usually drops within 24 to 48 hours. You may feel weak and tired for several days even as the fever goes down—this is normal. The parasite dies gradually, and your body clears the dead parasites through your liver and kidneys.
During this time, drink plenty of water and rest. If you are taking the medication by mouth, eat a light meal with it to reduce nausea. Do not stop taking the drug early, even if you feel better. You must complete the full course—usually three to seven days—to ensure all parasites are killed. Stopping early can leave parasites in your blood, and they can multiply again.
If your fever does not drop after 48 hours, or if you develop new symptoms like confusion, severe headache, or difficulty breathing, contact your doctor or go to the hospital. This can signal that the parasite is resistant to the drug you were prescribed, or that you have a different illness alongside malaria.
Managing side effects during treatment
Most antimalarial drugs cause mild side effects: nausea, headache, dizziness, abdominal pain, or loss of appetite. These usually appear in the first few days and fade as your body adjusts. Taking the medication with food can reduce nausea. Drinking water and resting help with headache and dizziness.
Some drugs cause more specific side effects. Chloroquine can cause itching, especially in people with darker skin. Quinine can cause ringing in the ears or blurred vision. Artemisinin drugs rarely cause serious side effects but may cause joint or muscle pain. These side effects are temporary and stop once you finish the course.
Serious side effects are uncommon but possible. If you develop a rash, severe allergic reaction, yellowing of the skin or eyes, dark urine, or severe abdominal pain, stop the medication and contact your doctor immediately. Do not assume these are normal side effects—report them.
Treatment for pregnant women and children
Pregnant women with malaria need treatment immediately, as untreated malaria can cause miscarriage, stillbirth, or severe illness in the mother. Artemisinin-based drugs are safe in the second and third trimester. In the first trimester, quinine is traditionally used, though some guidelines now support artemisinin use after the first 12 weeks. Your doctor will weigh the risks and benefits based on your stage of pregnancy.
Children are treated with the same antimalarial drugs as adults, but the dose is based on weight. Young children may receive the medication as a liquid suspension rather than tablets. Severe malaria in children requires hospital admission and IV artesunate, just as in adults. Children recover quickly once treatment starts, but they are at higher risk of brain damage if treatment is delayed.
What to do if treatment fails or the parasite returns
If your fever does not drop within 48 hours, or if it returns after you finish treatment, the parasite may be resistant to the drug you received. Contact your doctor and describe when the fever started, when it dropped (if at all), and when it returned. Your doctor may switch you to a different antimalarial drug or order a blood test to confirm the parasite type.
Drug resistance varies by region. If you caught malaria in Southeast Asia, the parasite is more likely to resist artemisinin drugs. If you caught it in Africa, resistance patterns are different. Your doctor uses this information to choose a second drug. Treatment failure is uncommon but not rare, especially in regions with high resistance.
After you finish treatment, you are not immune to malaria. You can catch it again if you return to a malaria region or are bitten by an infected mosquito. Prevention through insecticide-treated bed nets, indoor spraying, and antimalarial drugs (if you travel) is the best protection.
Recovery and follow-up after treatment ends
Most people recover fully within two to four weeks of finishing antimalarial treatment. You may feel tired and weak for longer, especially if you had severe malaria. This fatigue is normal and gradually improves with rest and good nutrition.
Your doctor may order a follow-up blood test one to two weeks after treatment ends to confirm the parasite is gone. If you had severe malaria, you may need additional follow-up to check that your organs—liver, kidneys, brain—have recovered. If you had cerebral malaria (brain involvement), you may need neurological follow-up to check for lasting effects.
Once you recover, you can return to normal activities. There is no need for isolation or special precautions—malaria is not spread person-to-person. You are only contagious to mosquitoes if you still have parasites in your blood, which is why completing treatment matters.
Frequently Asked Questions
How long does it take to recover from malaria?
Fever usually drops within 24 to 48 hours of starting treatment. Full recovery—returning to normal energy and appetite—takes two to four weeks. Severe malaria takes longer; you may feel weak for months. If you do not improve within two weeks, contact your doctor.
Can malaria come back after treatment?
Once treated, the parasite is cleared from your blood and malaria does not return on its own. However, you can catch malaria again if bitten by an infected mosquito. Some malaria parasites (P. vivax and P. ovale) can hide in your liver and reactivate months or years later; your doctor may prescribe additional medication to prevent this.
What if I cannot tolerate the side effects of my antimalarial drug?
Tell your doctor about side effects. Many can be managed by taking the drug with food, staying hydrated, or resting. If side effects are severe or unbearable, your doctor can switch you to a different antimalarial drug. Do not stop treatment on your own.
Is there a cure for malaria?
Yes. Antimalarial drugs cure malaria by killing the parasite. Treatment is most effective when started early. Severe malaria can cause lasting organ damage even after the parasite is cleared, but the infection itself is curable with the right medication.
Do I need to stay in the hospital to be treated for malaria?
Not unless you have severe malaria. Most people take antimalarial drugs at home and recover without hospitalization. You need hospital admission if you have confusion, seizures, severe anemia, kidney failure, or difficulty breathing—these are signs the parasite has damaged your organs.