How long does nebuliser treatment take to work for bronchiolitis?

Bronchiolitis inflames the small airways, commonly in babies and young children. A nebuliser turns liquid medicine into a mist that can be breathed in. Some children show easier breathing during or soon after treatment; others gain little benefit if mucus and airway swelling are the main problems. The clinical team may watch breathing, feeding, oxygen levels and alertness rather than judging treatment by a single change.

Symptoms can fluctuate, and noisy breathing or coughing may continue after a session. Nebuliser treatment is different from oxygen, fluids or suction, which may also be needed in hospital.

Give only the medicine and dose prescribed for the child. Keep the child upright while awake, offer smaller feeds more often if feeding is tiring, and clear the nose gently as advised. Do not add medicines to the nebuliser or repeat sessions without clinical instructions. Record when treatment was given and whether breathing, feeding and wet nappies change, so the clinician can assess the overall pattern.

Seek urgent medical help if the child is struggling to breathe, the ribs pull in, breathing pauses, the lips look blue or grey, the child is unusually sleepy, or feeding is clearly reduced. In a baby, fewer wet nappies can signal dehydration. A nebuliser should not delay emergency assessment when breathing is worsening.

Ask which medicine is being nebulised, what improvement should be expected, how long to wait before reassessment, and which breathing or feeding changes require immediate help.