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Quinine for malaria

Quinine is prescribed to treat malaria in people who have been bitten by an infected mosquito. It is not suitable for preventing malaria.

Quinine is an ingredient of drinks such as tonic water and bitter lemon - try to avoid these while you are taking quinine tablets.

Contact a doctor immediately if anyone swallows quinine by accident, or if you take more than the prescribed dose.

At a glance

  • Quinine is a medicine used to treat the serious infection malaria.

  • Take quinine exactly as your doctor tells you, spacing the doses evenly throughout the day.

  • Always finish the course of medicine, even if you start to feel better.

  • Tell your doctor if you experience hearing issues, ringing in your ears, headaches, nausea, or vision problems.

  • If you suspect an overdose or accidental swallowing, seek immediate medical help.

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About quinine for malaria

Type de médicament

An antimalarial medicine

Utilisé pour

To treat malaria

Aussi appelé

Quinine bisulfate, quinine dihydrochloride, quinine sulfate

Disponible sous forme de

Tablets and injection

Paludisme is a very serious infection which you can develop from a bite from an infected mosquito. The most common symptom is high temperature (fever) and a flu-like illness. Malaria can occur even up to a year after travelling in an area in which there is malaria. Prompt treatment for malaria is essential. If you feel unwell and have recently visited an area in which there is malaria, you should seek prompt medical advice, even if you have taken your antimalarial medication correctly.

Malaria is caused by a parasite called plasmodium. The parasite lives inside the stomach of an infected female mosquito and is passed to humans from a mosquito bite. There are four types of plasmodium that cause malaria. Of the four, Plasmodium falciparum is usually the most serious, so this type of malaria is likely to be treated in hospital.

Quinine is also used to treat night-time leg cramps. For information about this please see the medicine leaflet Quinine for leg cramps.

Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking quinine it is important that your doctor knows:

  • Si vous êtes enceinte ou si vous allaitez.

  • If you have any problems with your eyes, or with your hearing.

  • If you have a heart condition, such as an irregular heart rhythm.

  • If you have any problems with the way your kidneys work, or any problems with the way your liver works.

  • If you have blood in your urine.

  • If you have been told you have an imbalance of salt levels in your blood.

  • Si vous avez une affection provoquant une faiblesse musculaire, appelée myasthénie grave.

  • If you have glucose 6-phosphate dehydrogenase deficiency. This is a genetic disorder where there is a lack of an enzyme often known as G6PD. People with this disorder have problems after eating foods such as fava beans.

  • Si vous prenez d'autres médicaments. Cela inclut tous les médicaments que vous prenez et qui sont disponibles à l'achat sans ordonnance, ainsi que les médicaments à base de plantes et les médecines complémentaires.

  • If you have ever had an allergic reaction to a medicine, or if you have had a bad reaction to quinine in tonic water or any other soft drink.

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  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about quinine and will provide you with a full list of the side-effects which you may experience from taking it.

  • Take quinine exactly as your doctor tells you to. If you are being treated in hospital, your nurse will tell you when your tablets are due. If you are being treated at home, your doctor or pharmacist will tell you how many tablets to take for each dose, and when the doses should be taken. Your dose will also be printed on the label of the pack to remind you about what the doctor said to you. Space the doses evenly throughout the day and continue to take the tablets until the course is finished, unless your doctor tells you to stop sooner. It is important you do this even if you feel better. It is to make sure that all of the parasite has been removed from your body.

  • Swallow your doses with a drink of water. You can take quinine tablets either before or after meals.

  • If you forget to take a dose, take it as soon as you remember. Try to take the correct number of doses each day but do not take two doses at the same time to make up for a missed dose.

  • If you are being treated from home, make sure you keep your regular appointments with your doctor. This is so your doctor can check on your progress.

  • Your doctor will discuss with you the possibility of unwanted side-effects of the treatment. It is important that you let your doctor know, avant you take your next dose, if you experience any of the following: impaired hearing, ringing noises in your ear, headaches, feeling sick (nausea), or any problems with your eyesight.

  • Quinine is present in drinks such as tonic water and bitter lemon. It is probably best to avoid these drinks while you are taking quinine tablets.

  • Never take more than the prescribed dose. Taking too much quinine can cause serious problems. Also, quinine is dangerous if it is taken by a child, so keep the tablets away from children. If you suspect that someone has taken an overdose of quinine or has swallowed some by accident, you must contact a doctor immédiatement. Alternatively, go to the accident and emergency department of a local hospital. Ne tardez pas. Prenez le contenant avec vous, même s'il est vide. Cela permet au médecin de savoir ce qui a été pris.

  • If you buy any medicines, always check with a pharmacist that they are suitable to take with your other medicines. This is because some medicines (such as cimetidine which is taken for heartburn) can interfere with quinine and increase the risk of serious side-effects.

  • If you are being treated for diabetes, quinine can lower the level of sugar in your blood. Your doctor will be able to advise you about this.

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Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the side-effects associated with quinine. You will find a full list in the manufacturer's information leaflet supplied with your medicine. Although unwanted effects often improve as your body adjusts to a new medicine, serious side-effects do still sometimes occur. Contact your doctor for advice as soon as possible if you experience any of the following:

Quinine side-effects

Que puis-je faire si je ressens cela ?

Diarrhoea, feeling sick (nausea), feeling weak or confused, 'ringing' in your ears, headache, having a spinning sensation (vertigo)

Tell your doctor as soon as possible

Vision problems, such as blurred vision and colour changes

Tell your doctor as soon as possible. Do not drive while your vision is affected

Hot and flushed skin, rashes, muscle weakness, increased sensitivity to light

Si l'un d'eux devient gênant, informez-en votre médecin

Difficulty breathing, swelling around your mouth or face

Parlez avec votre médecin

immédiatement

- these are signs of an allergy to quinine

Unexplained bleeding, unusual bruising, sore throats or infections

Tell your doctor as soon as possible - these could be signs of a serious blood disorder and your doctor will want to check for this

Si vous ressentez d'autres symptômes que vous pensez être dus aux comprimés, veuillez consulter votre médecin ou votre pharmacien pour obtenir des conseils supplémentaires.

  • Gardez tous les médicaments hors de la portée et de la vue des enfants.

  • Conserver dans un endroit frais et sec, à l'abri de la chaleur et de la lumière directes.

Informations importantes sur tous les médicaments

Si vous subissez une opération ou un traitement dentaire, informez la personne effectuant le traitement des médicaments que vous utilisez.

Ce médicament est pour vous. Ne le donnez jamais à d'autres personnes, même si leur état semble être le même que le vôtre.

Ne gardez pas de médicaments périmés ou indésirables. Apportez-les à votre pharmacie locale qui s'en débarrassera pour vous.

Si vous avez des questions concernant ce médicament, demandez à votre pharmacien.

Signaler les effets secondaires d'un médicament ou d'un vaccin

Si vous ressentez des effets secondaires, vous pouvez les signaler en ligne via le Yellow Card website.

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Questions fréquemment posées

What is the primary purpose of quinine in treating malaria?

Quinine is an antimalarial medicine used specifically to treat malaria, a serious infection caused by a parasite from an infected mosquito bite.

Will I be treated for malaria in hospital or at home?

Your treatment setting depends on the type of malaria you have. If you contract Plasmodium falciparum malaria, which is usually the most serious type, you are likely to be treated in hospital. For other types, you might be treated at home, but your doctor or nurse will guide you on how to take the medication.

Are there any drinks or foods I should avoid while taking quinine?

While taking quinine tablets, it's best to avoid drinks that also contain quinine, such as tonic water and bitter lemon. If you have glucose 6-phosphate dehydrogenase deficiency, you should avoid foods like fava beans, as they can cause problems.

What should I do if my symptoms improve before I finish the course of quinine?

It is very important to continue taking quinine tablets until the course is finished, even if you feel better. This ensures that all of the malaria parasite has been removed from your body and prevents the infection from returning.

Can I take other medicines or supplements while I'm on quinine?

You should tell your doctor about all medicines you are currently taking, including those bought without a prescription, as well as herbal and complementary medicines. Some medicines, like cimetidine (for heartburn), can interfere with quinine and increase the risk of serious side-effects. Always check with a pharmacist if any new medicines are suitable to take with quinine.

What should I do if I accidentally take too much quinine or a child swallows it?

If you suspect an overdose of quinine or if a child has swallowed some by accident, you must contact a doctor straightaway or go to the accident and emergency department of your local hospital without delay. Take the medicine container with you so the medical staff know what has been taken.

How will I know if quinine is causing a serious problem, and what should I do?

Contact your doctor for advice as soon as possible if you experience any of the following: vision problems (like blurred vision, color changes), difficulty breathing, swelling around your mouth or face, unexplained bleeding, unusual bruising, sore throats, or infections. These could indicate serious side-effects or an allergic reaction, and serious side-effects do sometimes occur even if they are not common for everyone.

Lectures complémentaires et références

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About the authorView full bio

Author image

Michael Stewart, MRPharmS

Medicine Leaflet Review Manager – Contractor, Pharmacist

BPharm (Hons), MRPharmS

Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.

About the reviewer

Author image

Sid Dajani

Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.

Historique de l'article

Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.

  • Next review due: 16 Jun 2027
  • 16 Jun 2024 | Dernière version

    Dernière mise à jour par

    Michael Stewart, MRPharmS

    Revu par

    Sid Dajani
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