Answer
Yes. Timolol may increase glucose-lowering effects and hide symptoms of low blood sugar.
Sources for this answer
- Travoprost/Timolol Mylan 40 micrograms/ml + 5 mg/ml eye drops, solution — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.