I have a dry cough despite medication. What else can help me?

Question

Hello doctor,

I have had a dry cough for five weeks, no phlegm, no chest pain, no wheezing, and no history of allergies or asthma. The X-ray is clear, but the cough is still persistent.

The first symptom was insomnia for three days, followed by an itchy throat and then a cough, which is still ongoing, but the cough is often.

I have completed the three-day course of Azithromycin, now taking Montelukast and Levocetirizine as prescribed by the doctor for sleep.

Please suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I read your query and understood your concern.

Your symptoms suggest it is likely a post-infectious or irritative cough. After a mild viral or throat infection, the lining of the throat and small airways becomes hypersensitive.

Even when the infection has resolved, this ticklish cough reflex stays active and is easily triggered by cold air, talking, laughing, or lying down. Your clear X-ray is very reassuring. It effectively rules out pneumonia, tuberculosis, or any major lung problem at this stage.

Other frequent reasons why a cough can persist despite normal findings include post-nasal drip from mild allergy or sinus irritation, silent acid reflux or gastroesophageal reflux disease (GERD) when stomach acid moves upward and irritates the throat (especially after heavy or late meals), and cough-variant asthma, where the only symptom is cough.

In your case, the overall picture fits best with a post-infectious and possibly reflux-related airway sensitivity. The aim now is to calm the airway lining, reduce irritation, and allow it to reset.

Here is what I would advise:

Tablet Montelukast 10 mg (milligrams) with Levocetirizine 5 mg once nightly for 10 days.
Tablet Pantoprazole 40 mg with Domperidone 30 mg once daily, half an hour before breakfast, for 10 days.
Betadine gargles (dilute one part Betadine mouthwash with one part lukewarm water) three times daily for five days.
Any medicated lozenge three to four times daily (to be slowly dissolved).

Dextromethorphan-based cough syrup (for example, Dextromethorphan 15 mg, Chlorpheniramine, Phenylephrine) 5 ml at night, up to twice daily for five to seven days to quiet the cough reflex, especially at night. Avoid alcohol or driving after taking it.

Steam inhalation twice daily and warm saline gargles to help keep the throat and upper airway clear. Maintain good hydration; sip warm water frequently rather than large amounts at once.

Avoid cold air, dust, smoke, strong perfumes, and late-night spicy or oily meals. Sleep with the head end slightly elevated and keep at least a two-hour gap between dinner and bedtime to minimize reflux.

With this approach, most patients notice clear improvement over the next one to two weeks, and the cough usually settles completely as the airway recovers.

However, if the cough persists beyond four weeks, or if you develop any warning signs like

Breathlessness.
Chest pain.
High or persistent fever.
Coughing up blood.
Significant weight loss.
Night sweats.

If you are a heavy smoker or have TB (tuberculosis) exposure, then please see a chest specialist for examination, spirometry, and further tests.

These coughs can be frustrating, but they almost always resolve fully with time and care.

I hope that this answers your query.

Kindly follow up if you have more doubts.

Thank you.