A cough lasting 1.5 years is considered chronic and needs medical evaluation. You should see a doctor or a pulmonologist to check for underlying causes like asthma, allergies, acid reflux, chronic infections, or even lung issues. Avoid smoking and irritants, stay hydrated, and note any other symptoms like fever, weight loss, or shortness of breath to share with your doctor. Treating the underlying cause, not just the cough, is key.

Asthalin syrup can be used for children above 2 years if prescribed by the doctor. Most children with food allergies can take it, as it usually does not contain common food allergens, but you should check the syrup ingredients for any specific allergens. Always use under a doctor's guidance and follow the prescribed dose.