Bronchitis: How to Treat It and When to See a Doctor

A cough that started with a simple cold — and just won't quit. One week, two weeks, three. A tight feeling in your chest, tiredness, a hoarse voice. Sound familiar? That's the typical course of acute bronchitis, one of the most common reasons people visit a GP during the autumn and winter months.

Bronchitis can be genuinely miserable — the cough keeps you awake, disrupts your work, and leaves you exhausted even when your temperature is barely raised. Yet in the vast majority of cases it is a self-limiting illness that resolves on its own, and antibiotics do more harm than good.

This article gives you straight answers to the questions everyone asks when they're ill: how to recognise bronchitis, how to treat it at home, which pharmacy products actually help, and — most importantly — when to see a doctor or go to an emergency department without delay.

What is bronchitis?

The bronchi are the branching airways that carry air from the windpipe into the lungs. When the mucous lining of these airways becomes inflamed, we call it bronchitis. There are two main forms:

• Acute bronchitis — the most common form, usually lasting one to three weeks, although the cough can persist for four to eight weeks. In more than 90% of cases the cause is viral (rhinoviruses, seasonal coronaviruses, influenza, RSV, adenoviruses).
• Chronic bronchitis — defined as a productive cough lasting at least three months a year for two consecutive years; it is a component of COPD and requires separate medical management.

This article deals exclusively with acute bronchitis — the kind that can happen to any of us in autumn and winter.

Symptoms — what does bronchitis feel like?

The clinical picture is characteristic, though it can be confused with other respiratory conditions:

• Cough — the defining symptom. Initially dry and "barking," it may later become productive with yellowish or greenish mucus (this is an inflammatory response, not proof of a bacterial infection).
• A tight or burning feeling in the chest — caused by inflammation in the upper airways.
• Mild fever or low-grade temperature — usually below 38 °C (100.4 °F); a high fever should prompt a medical consultation.
• Fatigue and general malaise — typical of viral infections.
• Runny nose, sore throat, hoarseness — often present at the start of the illness as part of an upper respiratory tract infection.

A cough lasting two to three weeks is not in itself a reason for antibiotics or an urgent appointment, as long as none of the warning signs described below are present.

Symptom relief — what can you get over the counter?

Because the cause is viral, treatment focuses on relieving symptoms and supporting your body's natural defences. Here is what genuinely helps:

Cough remedies

The right product depends on the type of cough:

• Dry, irritating cough (you're not bringing anything up) — reach for cough suppressants containing dextromethorphan or butamirate. They act on the central nervous system to dampen the cough reflex, and are available as syrups and tablets. Do not use them for a productive cough — you will trap secretions in the airways.
• Productive cough with thick mucus — mucolytics and expectorants are helpful here: ambroxol, acetylcysteine (NAC), guaifenesin. They thin secretions and make them easier to clear. Ambroxol also has a mild anti-inflammatory effect.
• Mixed cough — start with a mucolytic if you feel something is "sitting in your chest" but you cannot bring it up. Once mucus is moving, a suppressant can be used at night if needed.

Avoid combining cough suppressants and expectorants at the same time — they work against each other.

Pain and fever relief

For a temperature above 38 °C (100.4 °F) or chest discomfort, ibuprofen (e.g. 200–400 mg every 6–8 hours) or paracetamol (500–1000 mg every 4–6 hours) are helpful. Ibuprofen has an additional anti-inflammatory effect, but should be avoided if you have stomach problems, and the recommended daily dose should not be exceeded.

Hydration and humidification

Underrated, yet essential. Drink plenty of warm fluids — tea with honey and lemon, warm broths, water. Good hydration thins bronchial secretions more effectively than many a syrup. A bedroom humidifier (50–60% humidity) reduces the dry, irritated feeling in your throat during sleep.

Saline inhalations

Nebuliser inhalations with 0.9% saline or hypertonic 3% saline are safe, inexpensive, and genuinely help to moisten the mucous membranes and make it easier to clear mucus. Both inhalation ampoules and simple nebulisers are available over the counter at pharmacies.

Herbal preparations and plant-based syrups

Ivy leaf (Hedera helix), thyme, marshmallow root, and ribwort plantain have documented soothing and expectorant effects. Syrups containing these ingredients are popular and well tolerated, particularly if you prefer to avoid synthetic ingredients. It is worth noting, however, that the evidence for their effectiveness is weaker than for ambroxol or NAC.

Antibiotics for bronchitis — are they necessary?

This is the most common question, and the most common source of pressure on doctors: "Please give me something strong." The answer is: in the vast majority of cases — no.

Leading medical bodies (including NICE, the CDC, and equivalent national family medicine associations across Europe) are unequivocal: routine antibiotic use in acute bronchitis in adults without underlying conditions does not speed recovery and exposes patients to side effects (diarrhoea, disruption of the gut microbiome, allergic reactions) while contributing to antibiotic resistance.

Yellow or green mucus does not indicate a bacterial infection. It is a normal result of the inflammatory response — neutrophils fighting the virus cause the colour change in secretions.

Antibiotics may be justified only in situations such as:

• confirmed or strongly suspected pneumonia (requires medical assessment and testing),
• infection with Mycoplasma pneumoniae or Chlamydophila pneumoniae (rare, requires medical evaluation),
• whooping cough (Bordetella pertussis) — a characteristic "staccato" cough lasting more than three weeks, especially in someone who is not fully vaccinated,
• serious underlying conditions (COPD, asthma, heart failure, immunosuppression) — decision for the doctor.

Red flags — when to seek medical help IMMEDIATELY

Bronchitis is usually a mild illness, but there are symptoms you must not ignore. Seek medical attention without delay if any of the following appear:

• 🔴 Breathlessness — difficulty breathing, a feeling of not getting enough air, wheezing while sitting quietly.
• 🔴 Fever above 38.5 °C (101.3 °F) lasting more than 3–4 days, or a sudden rise in temperature after an initial improvement.
• 🔴 Blood in mucus — even a small amount requires investigation.
• 🔴 Chest pain linked to breathing — a stabbing pain on inhaling may indicate pleurisy or a clot.
• 🔴 Bluish lips or fingertips — a sign of low oxygen, a medical emergency.
• 🔴 A cough lasting more than three weeks with no improvement at all — needs investigation to rule out pneumonia, asthma, COPD, acid reflux, or, less commonly, other causes.
• 🔴 Worsening symptoms in people with asthma or COPD — use your bronchodilator inhaler and contact a doctor promptly.
• 🔴 Age over 65 with marked general symptoms — older adults may not develop a fever even with a serious infection.

How long does bronchitis last? What to expect

The honest answer may come as a surprise: the cough in acute bronchitis lasts on average three weeks, but in one in two people it does not clear completely within four weeks, and in one in four it can linger for six weeks or longer. Research shows the average patient expects to feel better after seven to ten days — the reality is quite different.

This matters for two reasons: first, you won't panic after two weeks of coughing with no apparent improvement; second, if there is absolutely no improvement after three to four weeks, or symptoms are getting worse, that is genuinely a signal to see a doctor.

A typical course looks like this:

1. Days 1–3: Dry cough, sore throat, runny nose, mild fever. You feel the way you do with flu.
2. Days 4–7: The cough intensifies and may become productive. Fever subsides or falls sharply.
3. Week 2: Productive cough, gradual improvement in how you feel overall.
4. Weeks 3–6: A lingering residual cough, becoming less frequent. A light, dry cough triggered by exercise or cold air may persist for several weeks after the infection itself has resolved.

Bronchitis in children — additional notes

In young children (under two years of age) the clinical picture can resemble bronchiolitis, caused mainly by RSV. It is characterised by wheezing, rapid breathing, and feeding difficulties — it requires a paediatric assessment. Dextromethorphan is not suitable for children under 12 (age restrictions are stated on packaging).

If you suspect bronchitis in a child under three, or if there is any difficulty breathing, a medical consultation is essential.

Frequently asked questions

Do I need to take sick leave with bronchitis?

There is no single answer — it depends on how severe your symptoms are and the nature of your work. If you are coughing heavily, have a fever, or work with other people, resting at home makes sense not only for you but for those around you. The viruses that cause bronchitis are contagious for the first few days after symptoms appear.

Can I exercise with bronchitis?

A well-known rule of thumb: if symptoms are above the neck (runny nose, sore throat, mild malaise) — moderate exercise is generally safe. If symptoms go below the neck (chest tightness, cough, fever) — rest. Intense exercise with a fever can seriously strain your heart and prolong recovery.

Why does the cough get worse at night?

Lying down causes mucus to drip down the back of the throat, irritating the airways. Bedroom air is also often dry, which aggravates coughing. Helpful strategies include sleeping with your head slightly elevated, using a humidifier, drinking a warm drink before bed, and — if needed — taking a cough suppressant before settling down for the night.

Yellow mucus — does that definitely mean bacteria?

The colour of mucus is not a reliable indicator of the type of infection. Yellow and green mucus can appear with a straightforward viral infection after a few days — it is the result of neutrophil activity. A bacterial cause is suspected only when fever persists, the general condition deteriorates, or there are characteristic findings on imaging.

When can bronchitis develop into pneumonia?

Pneumonia is a relatively uncommon complication in otherwise healthy adults, but a real risk in older people, those with reduced immunity, diabetes, heart failure, or general debilitation. Warning signs include high fever, pain when breathing, breathlessness, and marked weakness. In that case a medical examination is essential — listening to the chest, chest X-ray.

Do essential oil inhalations help?

Eucalyptus, thyme, or peppermint oils can subjectively ease breathing through a cooling effect, but they have no documented therapeutic action. They are safe for adults in reasonable amounts. Do not use essential oil inhalations in children under three — menthol and camphor can trigger bronchospasm.

Summary

✅ Acute bronchitis is caused by a virus in more than 90% of cases — antibiotics do not help and are not routinely indicated.

✅ The cough can last three to six weeks — this is a normal biological process, not a reason to panic or demand antibiotics.

✅ over-the-counter (OTC) symptom relief genuinely works: mucolytics (ambroxol, NAC), cough suppressants (dextromethorphan, butamirate), ibuprofen/paracetamol, fluids, and saline inhalations.

✅ Match your remedy to the type of cough: dry — suppress it; productive — help bring it up; never use both mechanisms at the same time.

✅ Red flags are breathlessness, blood in mucus, pain when breathing, and fever lasting more than 3–4 days — these symptoms require prompt medical assessment.

✅ People with asthma or COPD should consult a doctor at any worsening cough — the risk of complications is higher for them.

✅ Rest, warm fluids, and humidified air are inexpensive, safe, and genuinely effective parts of treatment.

Disclaimer

This article is for educational purposes only and does not replace professional medical or pharmaceutical advice. If you have any concerns about your health, always consult a doctor or pharmacist. When taking medicines — even those available without a prescription — do so carefully, read the package leaflet, and observe contraindications.

Once you know which cough and bronchitis remedies you want to have on hand — syrups, mucolytics, fever and pain relievers — it is worth remembering that prices can vary significantly from one pharmacy to another. Real savings come from comparing your whole basket, not a single pack. With CheaperForDrug you can check the prices of all the products you need at various online pharmacies in one go, and choose the one that works out cheapest for your entire shopping list — not just one item, but the whole lot.