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Lopéramide pour la diarrhée

Imodium, Norimode

For adults with acute diarrhoea: take two tablets/capsules as soon as possible; then take one tablet/capsule after each time you go to the toilet with diarrhoea.

Have lots of water to drink to prevent you from becoming dehydrated. Eat as normally as possible, as soon as you feel able.

If your symptoms continue for more than 48 hours, speak with your doctor or pharmacist for advice if you have not already done so.

Loperamide must not be taken by children under 12 years of age unless it is prescribed for them by a doctor.

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What is loperamide?

Type de médicament

Médicament antimotilité

Utilisé pour

Acute diarrhoea

Également appelé

Imodium®; Loritax®; Norimode®

Disponible en

Capsules, tablets and 'instant' (dissolve-in-the-mouth) tablets

Loperamide is a medicine that can help if you have acute diarrhoea. Acute diarrhoea in adults starts suddenly and in most cases eases within a few days. The main treatment is to have lots to drink to prevent dehydration. The most common cause of acute diarrhoea is an infection. Many bacteria, viruses, and other germs can cause diarrhoea. In most cases the diarrhoea settles as your body's immune system clears the infection. Antidiarrhoeal medicines like loperamide may not be necessary; however, they can be helpful if you wish to reduce the number of trips that you need to make to the toilet. Most people only need to take loperamide for a day or so.

Loperamide works by slowing down the activity of your bowel. This reduces the speed at which the contents pass through, and so food remains in your intestines for longer. This allows more water to be absorbed back into your body and results in firmer stools that are passed less often.

Because loperamide regulates the passage of food through the digestive system, it can also help people with diarrhoea associated with irritable bowel syndrome, and people who need help to regulate their bowel movement following surgery on the intestines.

You can buy loperamide from retail outlets or get it on prescription from your doctor; however, it is not suitable for children under the age of 12 years unless it has been prescribed by a doctor.

Before taking loperamide

To make sure this is the right treatment for you, before you start taking loperamide it is important that you speak with your doctor or pharmacist:

  • Si vous êtes enceinte ou si vous allaitez.

  • Si vous avez des problèmes de foie.

  • If you have a long-term bowel condition such as ulcerative colitis.

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

  • Si vous avez déjà eu une réaction allergique à un médicament.

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How to take loperamide

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

  • Take loperamide exactly as your doctor tells you to, or as directed on the label. The usual dose for acute diarrhoea in an adult is 4 mg (two tablets/capsules) taken straightaway, followed by 2 mg (one tablet/capsule) after each time you go to the toilet with diarrhoea. This usually means taking three or four tablets/capsules a day. Never take more than eight tablets/capsules a day. If your symptoms continue for more than 48 hours, you should speak with a doctor if you have not already done so. Stop taking loperamide as soon as your symptoms settle down.

  • Most loperamide capsules and tablets are best swallowed with a drink of water. However, if you have been given a brand called Imodium® Instants, these are specially designed to dissolve in your mouth - place the tablet on your tongue and allow it to dissolve there before you swallow.

  • Loperamide should only be taken by a child younger than 12 years of age on the advice of a doctor. If your child has been prescribed loperamide liquid medicine, check the label on the bottle carefully to make sure you know what dose to give.

  • If you forget to take a dose, do not worry, just take a dose after the next time you go to the toilet with diarrhoea. Do not take two doses together to make up for a missed dose.

Tirer le meilleur parti de votre traitement

  • It is important that you have lots to drink to prevent you from becoming dehydrated. Drinking plain water is ideal, but juice and/or soup are also suitable. Try to avoid drinks that contain a lot of sugar, such as cola or pop, as they can sometimes make diarrhoea worse.

  • Des sels de réhydratation orale peuvent être pris pour aider à prévenir la déshydratation et remplacer les sels perdus. Ils sont particulièrement recommandés pour les enfants et les personnes fragiles ou souffrant de problèmes de santé sous-jacents. Vous pouvez les acheter en pharmacie.

  • Eat small, light meals as soon as you are able. Plain foods such as bread and rice are good foods to try eating first.

  • If your symptoms continue for more than 48 hours, speak with a doctor or pharmacist for advice if you have not already done so. If loperamide has been prescribed by your doctor and your diarrhoea has not settled after five days, you should return to your doctor for further advice.

  • If your symptoms get worse, or if you develop a high temperature, or if you pass blood in the diarrhoea, you should consult a doctor for advice as soon as possible.

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Can loperamide cause problems?

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with loperamide. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.

Common loperamide side-effects (these affect fewer than 1 in 10 people)

Que puis-je faire si je suis confronté à cette situation ?

Constipation

Stop taking loperamide

Wind (flatulence), feeling dizzy

This should soon pass. If it becomes troublesome, stop taking loperamide

Maux de tête

Drink plenty of water and ask your pharmacist to recommend a suitable painkiller.

Sensation de malaise (nausée)

Try taking loperamide after eating some food if you are not already doing so

If you experience any other symptoms which you think may be due to loperamide, speak with your doctor or pharmacist for further advice.

How to store loperamide

  • Conservez tous les médicaments hors de la vue et de la portée 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

Informations importantes sur tous les médicaments

Ne dépassez jamais la dose prescrite. Si vous pensez que vous ou quelqu'un d'autre avez pris une dose excessive de ce médicament, rendez-vous au service des accidents et des urgences de votre hôpital local. Emportez la boîte avec vous, même si elle est vide.

Si vous devez subir une opération ou un traitement dentaire, indiquez à la personne chargée du traitement les médicaments que vous prenez.

Si vous achetez des médicaments, vérifiez auprès d'un pharmacien qu'ils peuvent être pris avec vos autres médicaments.

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 les médicaments périmés ou dont vous ne voulez plus. Apportez-les à votre pharmacie locale qui les éliminera pour vous.

Si vous avez des questions sur 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 sur le site web de la carte jaune.

Autres lectures et références

Historique de l'article

Les informations contenues dans cette page sont rédigées et évaluées par des cliniciens qualifiés.

  • Date de la prochaine révision : 12 octobre 2026
  • 13 Oct 2023 | Dernière version

    Dernière mise à jour par

    Michael Stewart, MRPharmS

    Examiné par des pairs

    Sid Dajani
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