Puis-je prendre Allopurinol et Co-amoxiclav ensemble ?
Guide d'interaction médicamenteuse
Publié à l'origine 25 janv. 2026
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Taking allopurinol and co-amoxiclav together increases the risk of developing a skin rash. While most rashes are mild, there is a small risk of a more serious allergic reaction.
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It is generally considered safe to take allopurinol et co-amoxiclav together, but caution is advised as taking them together increases the risk of developing a rash.
If you notice any new skin rash, redness, or itching, contact your doctor immediately. If you develop a rash along with a fever or swelling of the face, seek urgent medical help.
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Pourquoi cela se produit
The exact reason isn't fully understood, but allopurinol seems to make the immune system more sensitive to penicillin-type antibiotics like co-amoxiclav. This makes an allergic-style skin reaction more likely to happen.
Comment savoir si vous avez une interaction médicamenteuse
Retour au sommaireYou may be experiencing an interaction between allopurinol and co-amoxiclav if:
You develop skin rashes, itching, or hives.
You experience fever, chills, or flu-like symptoms.
You notice unusual bruising or bleeding.
You feel tired, weak, or generally unwell.
You have swelling of the face, lips, or throat, which may indicate an allergic reaction.
Symptoms appear shortly after starting or increasing the dose of either medicine.
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Ce que vous devriez faire
Retour au sommaireSi vous présentez l'un des symptômes ci-dessus, vous devriez :
Stop taking the medicines and seek advice from your GP or pharmacist immediately.
Seek urgent medical help if you develop swelling of the face, lips, or throat, or have difficulty breathing.
Do not restart the medicines until a healthcare professional confirms it is safe.
Informez votre professionnel de santé de tous les autres médicaments et compléments que vous prenez.
Attend any blood tests or monitoring recommended to check for allergic reactions or other side effects.
Précautions importantes
Retour au sommaireSevere skin rash
Stop taking allopurinol immediately and seek urgent medical advice if you develop a skin rash, peeling skin, or sores on your lips or mouth. This can be a sign of a rare but life-threatening allergic reaction.
Allergie à la pénicilline
Do not take co-amoxiclav if you have ever had a severe allergic reaction (such as anaphylaxie or a skin rash) to penicillin or any other 'beta-lactam' antibiotic, as this can be fatal.
Liver problems (jaundice)
Seek medical advice if you develop yellowing of the skin or eyes (jaundice) or dark pee (urine). Co-amoxiclav can cause liver inflammation, which may sometimes occur even after you have finished the course.
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Avertissements sur la nourriture et les boissons
Retour au sommaireAlcool
Alcohol can increase the levels of uric acid in your blood, which makes allopurinol less effective at preventing gout attacks. It is best to limit or avoid alcohol, especially beer and spirits.
Caféine
High intake of caffeine may interfere with how allopurinol works to lower uric acid. Try to maintain a consistent, moderate intake rather than consuming very large amounts.
Water/fluids
While not a negative interaction, it is vital to drink plenty of fluids (2 to 3 litres a day) while taking allopurinol to help prevent kidney stones.
Nourriture (général)
To reduce the chance of feeling sick or having stomach upset, it is recommended to take co-amoxiclav at the start of a meal.
Utilisation d'autres médicaments
Retour au sommaireTaking multiple medicines? Our Vérificateur d'Interactions Médicamenteuses helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Avertissement
Ces informations sont fournies à des fins éducatives générales uniquement et ne doivent pas être considérées comme un substitut aux conseils médicaux professionnels. Consultez toujours votre médecin généraliste, votre pharmacien ou un autre professionnel de santé qualifié avant de prendre des décisions concernant vos médicaments. Les circonstances individuelles peuvent varier, et seul un professionnel de santé connaissant votre historique médical peut fournir des conseils personnalisés.
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Historique de l'article
Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.
25 janv. 2026 | Publié à l'origine

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