Answer
The selected linctus is licensed for non-productive cough. Suppressing a cough that clears mucus may cause sputum retention, so the cough type and cause should be assessed.
Sources for this answer
- Codeine Linctus BP — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.