Answer
No. They are related carboxamide antiseizure treatments but are separate active substances. Oxcarbazepine should not normally be taken with eslicarbazepine.
Sources for this answer
- Eslicarbazepine Milpharm 800 mg 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.