 |
| Dr Weriwoyingipre Silver Yeibake |
Malaria is a disease that millions of Nigerians live with every year. In the Niger Delta region—where Rivers, Bayelsa, and Delta states are located—the climate is perfect for mosquitoes. The rain falls heavily for months at a time, the creeks flood, and the vegetation is thick and green. All of these conditions create breeding grounds for the mosquitoes that carry malaria. For families in towns like Yenagoa, Port Harcourt, Opobo, Brass, and Sagbama, malaria is not something that happens once and then disappears; it is a constant threat. A child wakes up with a fever, a mother shivers under blankets, or a fisherman cannot go to the river because his body aches.
When someone contracts malaria, the standard treatment is clear. The World Health Organisation (WHO) recommends artemisinin-based combination therapies, called ACTs, as the first-line treatment for Plasmodium falciparum malaria, which is the deadliest type of malaria in Africa. These medicines include artemether-lumefantrine, artesunate-amodiaquine, and artesunate plus clindamycin. When taken correctly, these drugs kill the malaria parasite at different stages of its life cycle, curing the infection in three days. The fever subsides, the patient feels better, and the parasites are cleared from the blood. This is what should happen.
But in real life, many people are not cured. They take their medicine, and their fever goes down for a few days, but then it returns. They feel weak and tired, so they go back to the clinic. The doctor tests them again, only to find that the malaria is still there. This is called recurrence or recrudescence. It happens when the parasite is not completely eliminated from the body; some parasites survive the treatment, hide in the liver or deep in the blood, and then emerge to multiply again.
There are many reasons why malaria treatment fails and symptoms return. Sometimes the patient does not take the medicine correctly—they skip doses or stop early because they feel better. In other cases, the medicine is fake or substandard. Sometimes the patient takes herbal remedies that interfere with the antimalarial drug, or the malaria parasite has developed resistance to the medication. At times, the patient has concurrent health problems that make treatment harder. Whatever the cause, the result is the same: the malaria comes back, the patient gets sicker, and the cycle continues.
To understand why this happens, let me tell you three stories from the Niger Delta. These are three people between 15 and 45 years old who caught malaria, took treatment, and then saw their symptoms return. Their stories highlight different reasons for treatment failure and lead to different outcomes. They come from different communities, age groups, and walks of life, but they all offer the same lesson: when malaria treatment fails, it is not just bad luck. It is usually something predictable that could have been prevented.
The Story of Datonye, 19, from Degema
Datonye is 19 years old and lives in Degema, Rivers State. He is a student at a technical college in Port Harcourt and comes from a family of fishermen. His father and uncles fish in the creeks around Degema. Datonye is learning to be a mechanic so he can support his family when he finishes school. Young, active, and full of energy, he plays football on weekends and helps his father repair fishing nets. He thinks he is too young to get seriously ill.
In late March, Datonye woke up with a high fever. His head hurt, his body ached, and he felt too weak to get out of bed. His mother tested him with a rapid diagnostic test (RDT) at home, which was positive for malaria. She gave him a pack of artemether-lumefantrine that she had bought from a patent medicine shop near the market, telling him to take it exactly as instructed.
Datonye took the first two tablets on the day he started feeling sick, followed by the next two tablets eight hours later. On the second day, he took two tablets in the morning and two in the evening. On the third day, he took two tablets in the morning. However, by the afternoon, he felt much better. The fever had gone down, he was eating again, and he felt strong. Believing he was cured, he did not take the last two tablets scheduled for the third evening and threw the rest of the pack away, thinking he no longer needed them.
Two weeks later, Datonye fell ill again. The fever came back, his head hurt, and his body ached just as before, but he felt even weaker than the first time. He went back to his mother, who gave him the same medicine from the same shop. He took it again and felt better for three days, but then the fever returned. This time it was worse: he could not eat, he was vomiting, his urine was dark, and the whites of his eyes looked yellow.
Datonye's mother took him to the hospital in Port Harcourt. The doctor tested him again, and the blood smear showed that the malaria parasite was still in his blood at a high count. The doctor explained that Datonye had recrudescence because his first treatment was incomplete. By failing to finish the full three-day course of medicine, some parasites survived and began multiplying again.
Because Datonye's malaria was becoming severe, the doctor treated him with intravenous artesunate and administered fluids to treat dehydration from vomiting. Datonye stayed in the hospital for five days, missing two weeks of school. His father had to take time off from fishing to care for him, and the family spent significant money on hospital bills and transport.
What happened to Datonye is incredibly common. Many young people in the Niger Delta do not finish their full course of antimalarial medicine, stopping the moment they feel better. They assume they are cured, but feeling better does not mean the parasites are gone. The fever goes away because the drug kills the vast majority of the parasites, but the few that remain hide. If you stop the medicine early, those surviving parasites multiply. When the malaria returns, it is often far more severe.
Studies show that incomplete treatment is one of the leading causes of malaria recurrence in Nigeria. When patients do not complete the full dose, the concentration of the drug in the blood drops below the level required to kill all the parasites. The parasites that survive are often those with a higher tolerance to the drug, which is exactly how drug resistance develops. Datonye's case shows how a simple mistake—stopping medicine early—can lead to severe illness, hospitalisation, and contribute to the wider problem of drug-resistant malaria.
Datonye is well now. He finished a full course of intravenous artesunate followed by oral medication, and he is back at school. But he now tells his friends:
"When you take malaria medicine, finish all the doses. Do not stop when you feel better. Complete all three days. Even if you feel 100 per cent cured on day two, take the medicine on day three. That is the only way to make sure the malaria does not come back."
The Story of Ovieni, 28, from Yenagoa
Ovieni is 28 years old and lives in Yenagoa, Bayelsa State. She is married with two children—a boy aged 5 and a girl aged 3—and works as a trader in the local market selling food items like rice, palm oil, and dried fish. She is hardworking and responsible, taking care of her children and supporting her husband, who works as a driver. Ovieni is the kind of woman who takes care of everyone else but sometimes forgets to look after herself.
In May, during the rainy season, Ovieni started feeling feverish. She experienced chills and body aches but assumed it was just the weather. Instead of going to the clinic right away, she waited two days. By the third day, her fever was very high. Her children noticed how weak she was and told their father, who immediately took her to the primary health centre in Yenagoa.
The health worker tested Ovieni for malaria, and the result was positive. She prescribed artesunate-amodiaquine, one of the standard ACT combinations used in Nigeria, instructing Ovieni to take two tablets in the morning and two in the evening for three days. She explicitly warned her not to drink bitter leaf juice or any herbal remedies while taking the medication.
Ovieni went home and started her medicine. However, on the second day, her mother-in-law visited. Her mother-in-law is a traditional healer who firmly believes in herbal remedies. Seeing that Ovieni was still weak, she told her that modern medicine was not enough. She insisted that Ovieni drink bitter leaf juice to "strengthen her blood and clean her system", bringing a container of fresh bitter leaf juice and telling her to drink it twice daily.
Because Ovieni respected her mother-in-law, she started drinking the bitter leaf juice alongside her artesunate-amodiaquine, believing it would help her recover faster. For the first two days, she felt a little better—the fever subsided and she was able to eat. On the third day, she finished her prescribed medicine and felt okay.
But ten days later, Ovieni fell ill again. The fever returned, and she felt more tired than before. She could not stand for long and her skin looked pale. Her husband took her back to the clinic, where a blood smear confirmed that the malaria parasite had returned. Ovieni had recrudescence.
The doctor treated Ovieni again, this time using a different ACT, artemether-lumefantrine. He also tested her haemoglobin levels and found that she had developed anaemia, with a haemoglobin level of 8.1 g/dL. Malaria destroys red blood cells, and when it recurs, it destroys even more. The doctor prescribed iron supplements and folate. Ovieni spent three weeks recovering, during which she could not work in the market. Her income stopped, leaving her husband to support the family alone.
Ovieni’s situation is also highly common. Many people in the Niger Delta believe that combining herbal remedies with modern medicine makes the treatment stronger. They do not realise that some herbs interfere with how the body processes pharmaceutical drugs. Bitter leaf (Vernonia amygdalina) has shown some antiplasmodial activity in laboratory studies and can reduce parasite counts, but it does not completely eliminate them. When taken alongside ACTs, it can create a false sense of recovery while viable parasites remain active in the body.
Research shows that the WHO explicitly warns that non-pharmaceutical forms of antimalarial plants, like bitter leaf juice, contain highly variable and insufficient concentrations of active compounds to prevent recrudescence. Ovieni thought the bitter leaf was safe and natural, but it ultimately caused her treatment to fail, resulting in a recurrence coupled with severe anaemia that prolonged her recovery.
Ovieni has since recovered. She finished her second course of treatment and took iron supplements for a month, bringing her haemoglobin back to normal. She is back working in the market, but she now warns other mothers:
"Do not drink bitter leaf with malaria medicine. Take the medicine alone. Finish all three days and do not add anything."
Her mother-in-law still believes in the herbs, but Ovieni no longer listens. She learned the hard way.
The Story of Nengi, 42, from Brass Town
Nengi is 42 years old and lives in Brass Town, Bayelsa State. He is a fisherman and boat owner who runs a small fishing business with three other men. A respected man in his community, Nengi is a church deacon who helps organise local events. He is healthy, active, and had never been seriously sick before.
In June, Nengi woke up with a fever, chills, and body aches. He went to the clinic in Brass Town, tested positive for malaria, and was prescribed artemether-lumefantrine. Nengi took the medicine exactly as directed: two tablets immediately, two after 8 hours, and then two tablets twice daily for three days. He finished the full course, felt better after two days, and assumed he was completely cured.
However, Nengi did not stop there. He visited a herbalist he knew in the market, who told him he should take 'MAMA powder' to clean his blood and prevent the malaria from returning. The herbalist claimed MAMA powder—made from direction tree bark and adatama seed—was a powerful traditional remedy that had cured many. Wanting to ensure he stayed perfectly healthy, Nengi bought the powder and began taking it twice daily right after finishing his ACT course.
For a week, Nengi felt fine and returned to working on his boat. But on the eighth day, he began to feel feverish again. At first, he blamed it on work fatigue, but the fever steadily worsened. By the third day, he was suffering from high fever and severe chills, forcing him back to the clinic.
His blood smear showed that the malaria had returned with a high parasite count; Nengi had recrudescence. However, this time, something else was wrong. Nengi’s liver enzymes were dangerously elevated: his ALT was 180 U/L and his AST was 156 U/L. The doctor informed Nengi that he had suffered liver damage because the MAMA powder had caused hepatotoxicity (liver poisoning).
Nengi was admitted to the hospital, given intravenous artesunate to treat the malaria, and provided with supportive care for his liver. He remained hospitalised for six days while his liver function was monitored daily. It took three weeks for his liver enzymes to return to normal, meaning Nengi could not work for a month, losing vital business income while his wife managed the household alone.
What happened to Nengi is a severe example of herb-drug interaction. Because Nengi finished his full course of ACT, his treatment did not fail due to a missed dose; it failed because the MAMA powder interfered with the medication. MAMA powder contains alkaloids from Alstonia boonei that interact unpredictably with pharmaceutical drugs. Studies show that MAMA powder can actively counteract artesunate while causing other components to accumulate to toxic levels in the body, damaging vital organs.
Furthermore, MAMA powder can inhibit CYP3A4, the primary liver enzyme responsible for breaking down many antimalarial drugs. When this enzyme is blocked, the drug cannot be metabolised properly and builds up in the blood, which can trigger severe liver damage, kidney injury, or even fatal heart arrhythmias. Nengi was fortunate that his liver recovered, but the outcome could have been fatal.
Nengi is back to health and fishing again, but he now uses his platform as a community leader to caution others:
"Do not take herbal medicine with antimalarials. Do not take MAMA powder, Agbo iba, or anything else. Just take the ACT as prescribed and finish the doses. That is enough."
Nengi learned firsthand that traditional remedies are not inherently harmless, especially when mixed with modern medicine.
What These Three Stories Teach Us
Datonye, Ovieni, and Nengi represent different age groups, communities, and lifestyles, yet their experiences share an identical lesson: incomplete or incorrect usage causes malaria to return.
- Datonye (19, Degema): Suffered recrudescence because of incomplete treatment after stopping his artemether-lumefantrine early.
- Ovieni (28, Yenagoa): Suffered recrudescence and severe anaemia because she combined herbal juice (bitter leaf) with her medication, which compromised the drug's effectiveness.
- Nengi (42, Brass Town): Experienced recrudescence and severe hepatotoxicity because he took a traditional powder (MAMA powder) immediately after his ACT, which blocked his liver's ability to safely process the compounds.
These are not isolated cases of bad luck; they are scientifically predictable outcomes. When antimalarial medications are not taken at the right dose for the full duration, blood concentration levels drop below the threshold required to eradicate every parasite. The survivors multiply rapidly, leading to recrudescence.
When herbs are introduced, they can either accelerate drug metabolism (wiping the medicine out before it can work) or inhibit liver enzymes completely (causing toxic, organ-damaging accumulation).
Practical Steps to Prevent Malaria Treatment Failure
To ensure that malaria treatment works effectively and does not return, follow these practical steps:
Before Treatment Starts
- Get Tested First: Never assume a fever is malaria. Visit a clinic or health centre to get a malaria rapid diagnostic test (RDT) or a blood smear. These are widely available across Rivers and Bayelsa states.
- Confirm the Diagnosis: If your malaria test is negative but you still have a fever, ask your healthcare provider to screen for other causes, such as typhoid, dengue, or respiratory infections.
- Buy from Licensed Sources: Purchase your ACTs exclusively from registered pharmacies, licensed chemical shops, or government health centres. Avoid street vendors and unregulated markets, as counterfeit or substandard medicines lack the active ingredients needed to kill parasites.
During Treatment
- Complete the Three-Day Course: Never stop taking your medication early because your symptoms have improved. The remaining parasites must be cleared completely.
- Stick to the Schedule: Take your medication at the exact times directed. Use phone alarms or calendars to avoid missing doses.
- Take with Food When Required: Certain ACTs, such as artemether-lumefantrine, require fatty foods (like milk, eggs, or groundnuts) to be absorbed properly by the body. Always clarify this with your pharmacist.
- Avoid All Herbal Remedies: Do not consume bitter leaf juice, MAMA powder, Agbo iba, neem tea, or African peach root decoctions while undergoing treatment. Let the modern medicine work on its own.
- Never Share Medication: Antimalarial doses are calculated strictly by age and body weight. Sharing a pack means both individuals receive an incorrect, ineffective dose.
- Keep and Finish the Entire Pack: Do not save leftover tablets for a future illness; complete the entire prescription.
After Treatment
- Monitor Your Symptoms: If a fever, chills, or deep fatigue return within two weeks of completing your treatment, return to the clinic immediately. This is likely recrudescence rather than a new infection.
- Do Not Self-Medicate a Recurrence: If the infection returns, you must be re-evaluated. The doctor may need to prescribe an entirely different class of antimalarial drug.
- Prioritise Prevention: Sleep under insecticide-treated bed nets every night, wear long sleeves and trousers during the evening, use mosquito repellents, and clear any stagnant water around your home to eliminate breeding sites.
- Educate Your Family: Actively counter misinformation within your household. If a relative offers traditional herbs alongside modern pills, firmly decline and explain the risks.
The Truth About Common Malaria Myths
Let me talk to you about some things people say about malaria that are not true. These myths are common in our communities, in our markets, and in our homes. When people believe them, they make mistakes that lead to treatment failure. Let me tell you the truth behind each myth, the way I would explain it to a friend sitting with me on a bench.
First, many people say, "If the fever goes away, the malaria is cured." This is what Datonye thought. He felt better after two days of medicine, so he stopped. But a fever goes away because most parasites are killed, not all. Some parasites may still be hiding in your blood. You must finish the full three-day course to kill all parasites. Feeling better does not mean the job is done.
Second, many people say, "Herbal medicine makes treatment stronger." This is what Ovieni's mother-in-law believed. She gave Ovieni bitter leaf juice to make the medicine work better. But herbs like bitter leaf and MAMA powder can interfere with antimalarial drugs. They can reduce their effectiveness or even cause toxicity. When you mix herbs with ACTs, you are not helping. You are making things worse.
Third, many people say, "Bitter leaf juice is safe and natural." Everyone knows bitter leaf. Mothers give it to children, and elders drink it. But just because something is natural does not mean it is safe to take with malaria medicine. Bitter leaf has some antiplasmodial activity in laboratory tests and can reduce parasite counts, but it does not completely eliminate parasites. The WHO warns that bitter leaf juice has insufficient active compounds to prevent recrudescence. Ovieni learned this when her malaria came back ten days later.
Fourth, many people say, "You can stop medicine when you feel better." This is the most dangerous myth. Feeling better does not mean the parasites are gone. Stopping early allows surviving parasites to multiply and cause recrudescence. Datonye stopped on the third evening. Two weeks later, his malaria came back worse, and he had to go to the hospital, missing two weeks of school. All of this happened because he stopped early.
Fifth, many people say, "All fever is malaria." How many times have you heard someone say, "You have a fever, let me give you antimalarials"? But many diseases cause a fever, including typhoid, dengue, influenza, and respiratory infections. Get tested before taking malaria medicine. If you take antimalarials when you do not have malaria, you are wasting medicine and contributing to drug resistance.
Sixth, many people say, "You can share malaria medicine with family." Some people think, "I have extra tablets; let me give them to my child or my husband." But medicine is prescribed based on weight and age. A dose that is right for you may be too much or too little for someone else. Sharing can lead to wrong dosing and treatment failure. Each person needs their own prescription.
Seventh, many people say, "MAMA powder cleans blood and prevents malaria." Herbalists sell MAMA powder with this promise. They say it will clean your blood and prevent malaria from coming back. But MAMA powder contains alkaloids that interfere with antimalarial drugs. Studies show it can cause hepatotoxicity and fatal arrhythmias when combined with ACTs. Nengi learned this when his liver became damaged and he was hospitalised for six days.
Eighth, many people say, "Taking more medicine cures faster." Some people think, "If two tablets are good, four tablets must be better." But taking more than prescribed does not cure you faster; it causes toxicity and organ damage. Take exactly what the doctor prescribes—no more, no less.
Ninth, many people say, "Malaria is only during the rainy season." People think, "When the sun is hot, I will not get malaria." But malaria can occur year-round in the Niger Delta due to constant mosquito breeding in creeks and flooded areas. The mosquitoes do not stop breeding when the rain stops. You must protect yourself every day, not just during the rainy season.
Tenth, many people say, "Children can take adult medicine in smaller doses." Some parents think, "I will break my tablet and give half to my child." But children need paediatric formulations because they are made differently. Wrong dosing leads to treatment failure. Use age-appropriate medicine for children, and do not guess; ask the pharmacist.
Complications of Malaria Treatment Failure
When malaria treatment is compromised, the disease can quickly progress into severe, life-threatening complications:
Immediate Complications
- Severe Malaria: Recrudescence can trigger a massive surge in parasite numbers, leading to cerebral malaria (which causes confusion, seizures, and comas), profound anaemia, or organ failure.
- Acute Kidney Injury (AKI): Parasite toxins and cellular debris can overwhelm and damage the kidneys, leading to decreased urine output and hazardous waste buildup in the blood.
- Acute Respiratory Distress Syndrome (ARDS): Severe malaria can cause fluid accumulation in the lungs, making breathing exceptionally difficult and requiring emergency intensive care.
- Hypoglycaemia: Both malaria and certain treatments can cause blood sugar levels to crash, resulting in sudden confusion, seizures, or coma. This is particularly hazardous for pregnant women and young children.
Organ Damage and Chronic Conditions
- Hepatotoxicity: Mixing traditional remedies like MAMA powder with pharmaceuticals damages liver cells, causing jaundice (yellowing of the eyes and skin), dark urine, abdominal pain, and severe vomiting.
- Cardiac Arrhythmias: Certain antimalarials can alter the heart's electrical rhythm (prolonging the QT interval). If an individual introduces herbs that block drug metabolism, the medication builds up to toxic levels, which can trigger fatal heart failures.
- Chronic Anaemia: Repeated bouts of unresolved malaria steadily destroy red blood cells, causing long-term anaemia characterised by chronic fatigue, pale skin, and breathlessness.
Long-Term Impact
- Drug-Resistant Malaria: Survival of parasites due to incomplete or low-dose exposure allows them to mutate. Over time, these mutations create drug-resistant strains that threaten public health across West Africa.
- Economic Strain: Prolonged illnesses, hospitalisations, and repeated clinic visits cause immense financial stress due to lost wages and medical expenses.
Conclusion
Datonye, Ovieni, and Nengi have all recovered and returned to their daily lives. However, they each endured unnecessary suffering, hospitalisations, and financial loss—all of which could have been avoided by using their medications correctly the first time.
Malaria remains a dangerous disease that claims thousands of lives across Nigeria annually, but it is entirely curable. ACTs are highly effective and can cure the infection within three days if taken properly. The issue does not lie with the medicine itself, but with how it is administered. By completing our full courses, sourcing quality drugs from licensed providers, and keeping traditional herbs entirely out of our treatment regimes, we can break the cycle. Trust your ACT, complete the course, and leave the herbs out.
References
- World Health Organisation. (2019). The use of non-pharmaceutical forms of Artemisia. WHO position statement.
- World Health Organisation. (2024). Treatment of malaria. WHO Global Malaria Programme.
- Adepiti, A. A., & Elujoba, A. A. (2025). Investigation of herb-drug interaction between MAMA powder herbal antimalarial remedy and amodiaquine, chloroquine, artesunate in murine malaria. West African Journal of Pharmacy, 36(1), 1–15.
- Erhirhie, E. O., et al. (2025). Antimalarial herbal drugs: a review of their interactions with conventional antimalarial drugs. Journal of Pharmaceutical Research International.
- Okafor, C. I., et al. (2023). Antiplasmodial and antimalarial evaluation of a Nigerian hepta-herbal Agbo-iba decoction: Identification of magic bullets and possible facilitators of drug action. Journal of Ethnopharmacology, 299, 115807.
- Eke, C. C., et al. (2025). Awareness, knowledge and belief regarding bitter leaf use in Nigeria. PLOS One, 20(6), e0322364.
- Centres for Disease Control and Prevention. (2024). Drug Resistance in the Malaria-Endemic World.
- Okon, P. E., et al. (2026). Artemisinin resistance threat in Central and West Africa needs immediate attention. Journal of Public Health in Africa, 17(1), 2674.
- Ademolo, O. A., et al. (2022). Artemisia extracts differ from artemisinin effects on human hepatic CYP450s 2B6 and 3A4 in vitro. Phytotherapy Research, 36(11), 4321–4330.
- Federal Ministry of Health Nigeria. (2022). National Guidelines for Diagnosis, Treatment and Surveillance of Malaria in Nigeria. 5th Edition. Abuja: National Malaria Elimination Programme.
0 Comments