Answer
Dizziness, ataxia, diplopia, blurred vision and nausea have been reported when lamotrigine is added to carbamazepine, and these events usually resolve when the carbamazepine dose is reduced.
Sources for this answer
- LamictalGlaxoSmithKline UK · emc · SmPC §4.5 Interaction with other medicinal products · Version 53Document updated
Sources checked