Treatment for Cough from Viral Infection

Understanding Viral Cough

Most short-term coughs are caused by viral respiratory infections and are self-limiting, typically resolving within 2-3 weeks 2
Viral cough is often accompanied by symptoms such as fatigue, nasal congestion, mild fever, and body aches 2
The pathophysiology involves inflammation and disruption of airway epithelial integrity, leading to cough receptor hypersensitivity 3

Honey is recommended as a first-line treatment for patients aged over 1 year 1, 2
Maintain adequate hydration (recommended no more than 2 liters per day) 1
Avoid lying on the back as this makes coughing ineffective 1
Dextromethorphan-containing cough remedies are considered most effective for symptomatic relief 2
Menthol lozenges or vapor may provide additional symptom relief 2
Paracetamol (acetaminophen) can help manage associated fever and discomfort 1, 2

Inhaled ipratropium bromide should be considered as it has demonstrated efficacy in attenuating post-infectious cough in controlled trials 4
Inhaled corticosteroids may be considered when cough adversely affects quality of life and persists despite ipratropium use 4
For distressing cough, short-term use of codeine linctus, codeine phosphate tablets, or morphine sulfate oral solution may be considered 1, 4
For severe paroxysms of post-infectious cough, oral prednisone (30-40 mg daily) for a short, finite period may be prescribed after ruling out other common causes 4

For confirmed or strongly suspected influenza within 48 hours of symptom onset, consider oseltamivir to potentially decrease antibiotic usage, hospitalization, and improve outcomes 6
Red flags requiring medical evaluation include hemoptysis, significant breathlessness, prolonged fever and feeling unwell, underlying medical conditions, recent hospitalization, and symptoms persisting beyond three weeks 2

Antibiotics have no role in treating viral cough and should not be used unless there is confirmed bacterial infection 4, 6
Do not use antipyretics with the sole aim of reducing body temperature 1
Avoid inappropriate use of antibiotics for non-bacterial causes of post-infectious cough to prevent antimicrobial resistance 4

Honey should not be given to infants under 1 year of age due to risk of botulism 1
Older patients or those with comorbidities, frailty, impaired immunity, or reduced ability to cough are at higher risk of developing severe pneumonia 1
These patients may require closer monitoring and earlier intervention 1