Answer
Possibly. Their opposing effects on histamine receptors could theoretically make one or both less effective, so check concurrent use with a pharmacist or prescriber.
Sources for this answer
- NHSNHS · NHS medicine guidance
- SERC - 16 — 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.