Answer
Non-selective beta-blockers, including some eye drops, can block formoterol’s effect and worsen breathing. The prescriber should review this combination.
Sources for this answer
- Trimbow pMDI 172 micrograms/5 micrograms/9 micrograms pressurised inhalation, solution — 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.