Answer
Keep the bottle tightly closed in its carton, below 25°C and protected from light. Do not refrigerate it after opening, and discard it after 7 days.
Sources for this answer
- Cystadrops 3.8mg/ml eye drops — 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.