Answer
Yes. Tell the surgical and anaesthetic team because some anaesthetics can increase its effects on heart function and blood pressure.
Sources for this answer
- NHSNHS · NHS medicine guidance
- Metoprolol tartrate 50 mg film-coated tablets — 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.