Complex sentence: Topiramate or valproic acid are preferable although all other current antiepileptics excepting ethosuximide, can be used in the treatment of complex partial seizures.
Split into simpler sentences: Topiramate or valproic acid are preferable although other antiepileptics are also used. All current antiepileptics, other than ethosuximide, can be used in the treatment of complex partial seizures.