Respiratory

Medicines for Acute bronchitis

A usually viral, self-limiting chest infection that causes a cough — often with phlegm — for up to a few weeks after a cold; antibiotics are usually not needed and treatment is supportive, with rest, fluids and simple remedies for fever and aches.

Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.

Quick answer

What is Acute bronchitis?

Acute bronchitis is a short-lived infection of the large airways (the bronchi) that causes them to become inflamed. It usually follows a common cold or other upper-respiratory virus and is, in the great majority of cases, viral and self-limiting — meaning it gets better on its own.

  • How it is treated: For most people, acute bronchitis does not need antibiotics, because it is usually caused by a virus and antibiotics do not help most people, do not shorten the illness meaningfully, and carry side effects and contribute to antibiotic resistance.
  • Self-care: Most people get better with simple self-care at home: rest, drinking plenty of fluids, and giving the body time to clear the infection.
  • When to seek help: Most acute bronchitis settles on its own and does not need a doctor.

What it is

Acute bronchitis is a short-lived infection of the large airways (the bronchi) that causes them to become inflamed. It usually follows a common cold or other upper-respiratory virus and is, in the great majority of cases, viral and self-limiting — meaning it gets better on its own. The main symptom is a cough, which is often dry at first and may then bring up clear, yellow or green phlegm; the colour of phlegm does not reliably tell you whether antibiotics are needed. Some people also have wheeze, a tight or uncomfortable chest, a mild fever, a sore throat or a blocked nose. The cough is typically the last symptom to settle and can linger for up to about three weeks, sometimes a little longer, even after the person otherwise feels well. Acute bronchitis is different from pneumonia, which is an infection of the lung tissue itself and tends to cause more obvious breathlessness, higher fever and feeling much more unwell; it is also different from a flare-up of an ongoing condition such as asthma or COPD. Most people recover fully without any specific treatment.

How it is treated

For most people, acute bronchitis does not need antibiotics, because it is usually caused by a virus and antibiotics do not help most people, do not shorten the illness meaningfully, and carry side effects and contribute to antibiotic resistance. This is an important point of antimicrobial stewardship: avoiding unnecessary antibiotics protects both the individual and the wider community. Care is therefore supportive — the body clears the infection itself, and the aim is to ease symptoms while that happens. Rest and plenty of fluids help, and simple remedies such as paracetamol or ibuprofen can be used for fever, aches and discomfort. Honey or over-the-counter cough preparations may soothe a troublesome cough, and a pharmacist can advise. People are reassured that the cough can last a few weeks and is part of normal recovery. Antibiotics are reserved for the minority who are frail, who have significant other health problems that put them at higher risk, or where there are signs that the infection has progressed to pneumonia. A doctor may sometimes give a back-up (delayed) prescription, to be used only if symptoms worsen or do not start to improve. Anyone who is becoming more breathless, more unwell, or whose cough is not settling is reassessed to make sure something more serious is not being missed.

Beyond medication

Lifestyle and self-care

Most people get better with simple self-care at home: rest, drinking plenty of fluids, and giving the body time to clear the infection. Paracetamol or ibuprofen can ease fever and aches, and a warm drink with honey may soothe the throat and cough — a pharmacist can suggest suitable remedies. Stopping smoking, and avoiding smoky or polluted air, helps the airways recover and reduces irritation of the cough. It helps to know that the cough often outlasts the other symptoms and can take up to about three weeks to settle, which is normal and not a reason for antibiotics on its own.

When to get help

When to see a doctor

Most acute bronchitis settles on its own and does not need a doctor. Seek advice — contact your GP or call 111 — if you become breathless or short of breath, develop chest pain, have a high fever or feel very unwell, cough up blood, or if your cough has not started to improve after about three weeks, as these can point to pneumonia or another problem that needs checking. People who are frail, elderly, pregnant, or who have heart, lung or immune conditions should seek advice sooner. Call 999 for severe difficulty breathing, blue lips, severe chest pain or new confusion.

999Emergency — call 999 or go to A&E
111Urgent advice — call NHS 111 or use 111 online
GPNon-urgent — see your GP or pharmacist

Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.

Answers

Acute bronchitis: frequently asked questions

What medicines are used for acute bronchitis?

For most people, no antibiotic is needed, because acute bronchitis is usually caused by a virus and antibiotics do not help most people. Treatment is supportive: paracetamol or ibuprofen can ease fever and aches, and soothing remedies such as honey or over-the-counter preparations may help the cough — a pharmacist can advise. Antibiotics are kept for the minority who are frail or high-risk, or where there are signs of pneumonia, and a doctor may sometimes give a back-up prescription to use only if things worsen.

Why won't my doctor give me antibiotics?

Because acute bronchitis is almost always viral, antibiotics do not work against the cause, do not meaningfully shorten the illness for most people, and can cause side effects while adding to antibiotic resistance. Avoiding unnecessary antibiotics is good for you and for everyone. Your doctor will offer antibiotics if you are frail or high-risk, or if there are signs the infection has become pneumonia.

How long will the cough last?

The cough is usually the last symptom to settle and commonly lasts up to about three weeks, sometimes a little longer, even after you otherwise feel well. This is normal and is not, on its own, a reason for antibiotics. See your doctor if the cough is not starting to improve after about three weeks, or if you become more breathless or unwell, so other causes can be ruled out.

How is it different from pneumonia?

Acute bronchitis affects the larger airways and is usually a milder, self-limiting viral illness, whereas pneumonia is an infection of the lung tissue itself and tends to cause more breathlessness, a higher fever and feeling much more unwell. Pneumonia usually needs antibiotics. If you are very breathless, have a high fever, chest pain or are getting worse, you should be assessed so pneumonia is not missed.

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