MRCP2-0588

A 32-year-old woman who is 10 weeks’ pregnant suffers two generalised tonic-clonic seizures on awakening. There is a family history of epilepsy. She has no other past medical history of note and following brain imaging and electroencephalogram (EEG), a diagnosis of idiopathic epilepsy is made. You are considering treatment with an anti-epileptic drug.
Which of the following would be the most suitable choice for her?