Clarithromycin for infection
Xetinin XL
Revisado por Dr Colin Tidy, MRCGPÚltima atualização por Michael Stewart, MRPharmSÚltima atualização 29 de maio de 2023
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Clarithromycin is a macrolide antibiotic. It can be taken by people who are allergic to penicillin.
It is important to complete the prescribed course (unless you are told to stop). Otherwise your infection could come back.
The most common side effects of clarithromycin are diarrhoea, feeling sick (nausea), tummy (abdominal) discomfort, and unusual tastes.
Neste artigo:
About clarithromycin
Tipo de medicamento | A macrolide antibiotic |
Usado para | Bacterial infections including chest, skin, and ear infections Some types of stomach ulcers |
Também chamado de | Xetinin XL® |
Disponível como | Tablets, ,modified-release tablets and oral liquid medicine |
What is clarithromycin used for?
Voltar ao conteúdoClarithromycin is a type of antibiotic used to treat bacterial infections such as respiratory infections, infecções de ouvido and skin infections.
Clarithromycin is also given to get rid of Helicobacter pylori. This is the bacterium believed to cause úlceras estomacais. If you are prescribed it for this reason, you will also be prescribed other medicines to take alongside it.
It works by stopping the bacteria causing the infection from multiplying.
Clarithromycin can be taken by adults and children.
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Side effects of clarithromycin
Voltar ao conteúdoCommon side effects of clarithromycin are:
Sentindo-se mal.
Vômito.
Stomach ache.
Farting (wind).
Indigestion.
Diarreia.
Changes to taste and smell.
Sore mouth.
Dor de cabeça.
Você encontrará uma lista completa na bula do fabricante fornecida com o seu medicamento.
Os efeitos indesejados muitas vezes melhoram à medida que seu corpo se ajusta ao novo medicamento, mas fale com seu médico ou farmacêutico se algum dos seguintes persistir ou se tornar problemático.
How to manage clarithromycin side effects
Voltar ao conteúdoCommon clarithromycin side effects (these affect fewer than 1 in 10 people) | O que posso fazer se passar por isso? |
Feeling sick or being sick, stomach ache, farting, indigestion | Stick to simple meals - avoid rich or spicy food |
Diarreia | Drink plenty of water to replace lost fluids. If the diarrhoea continues or is severe, speak with your doctor as soon as possible |
Tooth or tongue discolouration, and changes in the way things taste or smell | This will disappear after you finish your treatment |
Sore mouth | Speak with your doctor if this becomes a problem |
Dor de cabeça | Peça ao seu farmacêutico para recomendar um analgésico adequado |
Se você sentir quaisquer outros sintomas que acha que podem ser devido a este medicamento, fale com seu médico ou farmacêutico.
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Who should not take clarithromycin?
Voltar ao conteúdoSome medicines are not suitable for people with certain conditions. Before starting clarithromycin it is important that your doctor or pharmacist knows:
Se você está grávida ou amamentando.
If you have any problems with the way your liver works or the way your kidneys work.
If you know you have an unusual heart rhythm.
If you have a muscle disorder called myasthenia gravis.
If you are taking any other medicines. In particular, if you are taking a 'statin' medicine for high cholesterol or colchicine for gout as well as herbal and complementary medicines.
Se você já teve uma reação alérgica a um medicamento.
How to take clarithromycin
Voltar ao conteúdoRead the leaflet in the pack before starting clarithromycin. It explains how to take it and lists possible side effects.
Take exactly as your doctor tells you to and always check the label for the correct dose.
It is usually taken twice a day, in the morning and evening.
If you’re given a modified-release (XL) tablet, you only need to take one dose a day as it releases the medicine slowly throughout the day.
Standard tablets, liquid, and sachets can be taken before or after food. Modified-release (XL) tablets should be taken after food. Swallow whole, don’t chew or break them.
When clarithromycin is prescribed for a child, the dose will depend upon the child's weight. Make sure you read the label carefully so that you measure out the correct amount of medicine.
If you have been given clarithromycin sachets to take, open the sachet and mix the granules into a small glass of water before taking.
If you forget to take a dose, take one as soon as you remember. Do not take two doses at the same time to make up for a forgotten one.
Treatment usually lasts 5-14 days. Keep taking the antibiotic until you finish the course, even if you feel better, unless your doctor says otherwise. This helps stop the infection from coming back.
Obtendo o máximo do seu tratamento
Voltar ao conteúdoAlgumas pessoas desenvolvem candidíase (oral ou vaginal) after taking a course of antibiotics. If this happens to you, speak with your doctor or pharmacist for advice about how to treat it.
This antibiotic may stop the oral typhoid vaccine from working. If you are having any vaccinations, make sure the person treating you knows that you are taking this medicine.
If you are taking a 'statin' medicine for high cholesterol your doctor may advise you to stop taking the statin whilst being treated with clarithromycin. Ask your doctor or pharmacist if you are unsure.
Clarithromycin usually doesn’t affect the contraceptive pill, but diarrhoea, vomiting, or breakthrough bleeding may reduce its effectiveness. Ask your doctor or pharmacist for advice if this happens.
If you are having an operation or dental treatment, tell the person carrying out the treatment that you are taking clarithromycin.
If you buy any medicines, check with a pharmacist that they are suitable to take with this antibiotic.
If you still feel unwell after completing your course of the antibiotic, make another appointment to see your doctor.
How to store clarithromycin
Voltar ao conteúdoMantenha todos os medicamentos fora do alcance e da vista das crianças.
Armazene em local fresco e seco, longe de calor e luz diretos.
If you have been given liquid medicine, it will have been made up by the pharmacy and it lasts for a limited number of days only. Check the expiry date on the bottle and do not use it after this date.
Informações importantes sobre todos os medicamentos
Voltar ao conteúdoInformações importantes sobre todos os medicamentos
Nunca tome mais do que a dose prescrita. Se suspeitar que você ou outra pessoa possa ter tomado uma overdose deste medicamento, vá ao departamento de acidentes e emergências do hospital local. Leve o recipiente com você, mesmo que esteja vazio.
Este medicamento é para você. Nunca o dê a outras pessoas, mesmo que a condição delas pareça ser a mesma que a sua.
Se você for se submeter a uma operação ou a qualquer tratamento dentário, informe à pessoa que está realizando o tratamento quais medicamentos você está tomando.
Não guarde medicamentos vencidos ou indesejados. Leve-os à sua farmácia local, que se encarregará de descartá-los para você.
Se você tiver alguma dúvida sobre este medicamento, pergunte ao seu farmacêutico.
Relatar efeitos colaterais de um medicamento ou vacina
Se você sentir efeitos colaterais, pode relatá-los online através do site Cartão Amarelo.
Perguntas frequentes
Voltar ao conteúdoHow long does it take for clarithromycin to work?
Clarithromycin usually starts to improve symptoms within 2-3 days. Full recovery can take 7-14 days, depending on the type and severity of the infection.
Is clarithromycin safe to take during pregnancy?
Clarithromycin is generally not recommended during pregnancy, especially in the first trimester. Your doctor may prescribe a safer alternative antibiotic if needed.
Can you drink alcohol with clarithromycin?
It’s best to avoid alcohol while taking clarithromycin, as it can increase the risk of side effects like nausea, stomach upset, or dizziness. Limiting alcohol helps the medication work more effectively and keeps you comfortable.
What should you avoid when taking clarithromycin?
You should avoid alcohol and certain medications that can interact with clarithromycin, including some statins and heart medicines. Always check with your doctor or pharmacist before taking new medicines or supplements.
Vídeos selecionados para Medicamentos para tratamento de infecções

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Leitura adicional e referências
- Manufacturer's PIL, Clarithromycin 250 mg & 500 mg Tablets; Aurobindo Pharma - Milpharm Ltd, The electronic Medicines Compendium. Dated July 2021.
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Histórico do artigo
As informações nesta página são escritas e revisadas por clínicos qualificados.
Próxima revisão prevista para: 28 de maio de 2026
29 de maio de 2023 | Última versão

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