Amoxicilline pour les infections
Révision par Sid DajaniDernière mise à jour par Michael Stewart, MRPharmSDernière mise à jour : 11 mars 2025
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Amoxicillin is a type of penicillin - do not take it if you are allergic to penicillin. Make sure you tell your doctor if you are allergic to penicillin.
Space your doses out evenly over the day and complete the full course of the antibiotic, even if you feel your infection has cleared up. You can take amoxicillin either before or after food.
Common side effects include nausea, vomiting, diarrhoea, and thrush.
If you have an allergic reaction (such as any swelling around your mouth, any difficulties breathing or a red rash) contact a doctor for advice straightaway.
Dans cet article :
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About amoxicillin
Type de médicament | A penicillin antibiotic |
Utilisé pour | Infections bactériennes (chez les adultes et les enfants) |
Disponible en | Capsules, oral liquid medicine, soluble tablets, sachets of powder and injections |
What is amoxicillin used for?
Amoxicillin is a type of penicillin antibiotic used to treat bacterial infections including; sinus and chest infections, urine infections, ear infections, and some dental infections.
You may also be prescribed amoxicillin to prevent an infection from occurring if you are at particular risk of getting an infection.
Amoxicillin is sometimes used to get rid of Helicobacter pylori. This is an infection often found in people with stomach ulcers. If you are prescribed amoxicillin for this reason, you will also be prescribed other medicines to take alongside it.
Amoxicillin works by killing the germs (bacteria) responsible for the infection.
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Side effects of amoxicillin
The most common side effects of amoxicillin are:
Sensation de malaise (nausée).
Être malade (vomissements).
Diarrhée.
Grive.
Éruption cutanée.
Vous trouverez une liste complète dans la notice d'information du fabricant fournie avec votre médicament.
Les effets indésirables s'atténuent souvent au fur et à mesure que votre corps s'adapte au nouveau médicament, mais parlez-en à votre médecin ou à votre pharmacien si l'un des effets suivants persiste ou devient gênant.
How to manage amoxicillin side effects
Common amoxicillin side effects (these affect fewer than 1 in 10 people) | Que puis-je faire si je suis confronté à cette situation ? |
Feeling sick or being sick | Stick to simple foods. Try taking your doses of amoxicillin with something to eat if you are not already doing so |
Diarrhée | Buvez beaucoup d'eau pour remplacer les liquides perdus. Si la diarrhée persiste, s'aggrave ou contient du sang, informez-en immédiatement votre médecin. |
Redness and itching in the mouth or vagina (thrush) | Speak with a pharmacist or your doctor for advice about treatment |
Éruption cutanée | Let your doctor know as soon as possible as your treatment will need to be changed |
Important: if you develop an itchy rash, swollen face or mouth, or have difficulty breathing, these may be signs that you are allergic to a penicillin antibiotic.
Do not take any more of this medicine and speak with your doctor or go to your local accident and emergency department straightaway.
If you experience any other symptoms which you think may be due to the antibiotic, call your doctor or pharmacist for further medical advice.
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Who should not take amoxicillin?
Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking amoxicillin it is important that your doctor knows:
If you suspect you may have glandular fever (the symptoms are high temperature (fever), sore throat, swollen glands).
If you have an allergic condition, or if you have ever had an allergic reaction to a medicine. This is especially important if you have ever had a bad reaction to any penicillin antibiotic for example trouble breathing.
If you have any problems with the way your kidneys work for example kidney disease.
If you are pregnant or breastfeeding. Amoxicillin is not known to be harmful to babies; however, it is still important that you tell your doctor if you are expecting or breastfeeding a baby.
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.
How to take amoxicillin
Before you start the amoxicillin treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about amoxicillin and will provide you with a full list of the side effects you may experience from taking amoxicillin.
Take amoxicillin exactly as your doctor tells you to. It is usually taken three times daily, every eight hours. Your dose will be different to this if you are being treated with sachets of amoxicillin powder, or if you are taking amoxicillin to treat a stomach ulcer.
Your doctor or pharmacist will tell you how you should take the medication, and this information will be printed on the label of the pack to remind you.
It is important that you space out the amoxicillin doses evenly during the day.
If you have been given liquid medicine for a child, read the directions carefully to make sure you measure out the correct amount of medicine.
You can take amoxicillin either with or without food. The amoxicillin capsules should be swallowed whole with a drink of water.
If you have been supplied amoxicillin oral powder sachets, stir the powder from the sachet into 10-20 ml of water. Drink the solution as soon as possible after mixing it.
If you forget to take a dose of amoxicillin at the correct time, take one as soon as you remember. Try to take the correct number of doses each day, leaving at least four hours between doses. Do not take two doses of amoxicillin at the same time to make up for a missed dose.
Tirer le meilleur parti de votre traitement
If you (or your child) have been prescribed the oral liquid amoxicillin medicine, you may find that it causes some staining of the teeth. Brushing the teeth regularly helps to prevent this. Any staining usually disappears soon after the course of antibiotics is finished.
Even if you feel your infection has cleared up, keep taking the antibiotic until the course is finished (unless a doctor tells you to stop). This is to prevent the infection from coming back.
Antibiotics are prescribed in short courses of treatment. Your doctor will tell you how long your course of treatment will last - this is not usually for longer than 14 days. If you still feel unwell after finishing the course, go back to see your doctor.
Some people develop redness and itching in the mouth or vagina (thrush) after taking a course of antibiotics. If this happens to you, speak with your doctor or pharmacist for advice.
If you are taking birth control like the contraceptive 'pill' at the same time as this antibiotic, the effectiveness of the 'pill' can be reduced if you have a bout of being sick (vomiting) or diarrhoea which lasts for more than 24 hours.
If this should happen, ask your doctor or pharmacist for advice about what additional contraceptive precautions to use over the following few days.
There is no need to use additional precautions for any bouts of sickness or diarrhoea which last for less than 24 hours.
Amoxicillin can stop the oral typhoid vaccine from working so if you are due to have any vaccinations, make sure the person treating you knows that you are taking this antibiotic.
How to store amoxicillin
Conservez 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.
If you have been given liquid medicine, this will have been made up by the pharmacy and lasts for 14 days. Make sure you check the expiry date on the bottle and do not use it after this date.
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 immédiatement au service des accidents et des urgences de votre hôpital local. Emportez la boîte avec vous, même si elle est vide.
Ce médicament est pour vous. Ne le donnez jamais à d'autres personnes, même si leur état semble être le même que le vôtre.
Si vous achetez des médicaments, vérifiez auprès d'un pharmacien qu'ils peuvent être pris en même temps que vos autres médicaments.
Si vous devez subir une opération ou un traitement dentaire, indiquez à la personne chargée du traitement les médicaments que vous prenez.
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.
Questions fréquemment posées
Can you drink alcohol with amoxicillin?
You can usually drink alcohol in moderation while taking amoxicillin, as it does not interact directly with the medicine. However, alcohol can make side effects such as nausea, dizziness, and stomach upset more likely, and may slow your recovery. If you are feeling unwell, it is generally best to avoid alcohol until you are better.
Can you take paracetamol with amoxicillin?
Yes, you can take paracetamol with amoxicillin. The two medicines do not interact, and paracetamol can help relieve fever or pain while the antibiotic treats the infection. Always follow the dosing instructions on the label or from your doctor.
Can amoxicillin make you tired?
Amoxicillin itself does not usually cause tiredness, but some people do feel more fatigued while taking it. This is often due to the infection your body is fighting rather than the antibiotic.
Does amoxicillin treat UTIs?
Amoxicillin can be used to treat some urinary tract infections, but it is not always the first choice. Many UTIs are caused by bacteria that are resistant to amoxicillin, so doctors often prescribe other antibiotics instead. A urine test is usually needed to confirm the best treatment.
Autres lectures et références
- Manufacturer's PIL, Amoxicillin Capsules 250 mg and 500 mg; Aurobindo Pharma - Milpharm Ltd, The electronic Medicines Compendium. Dated March 2024.
- Manufacturer's PIL, Amoxicillin 125 mg/5 ml Oral Suspension Sugar Free BP; Brown & Burk UK Ltd, The electronic Medicines Compendium. Dated February 2023.
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Historique de l'article
Les informations contenues dans cette page sont rédigées et évaluées par des cliniciens qualifiés.
Prochaine révision prévue : 10 mars 2028
11 Mar 2025 | Dernière version

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