Exclusion Criteria
Cluster headache or chronic migraine headaches
boolean
Currently uses, or within 3 months of Screening, has used: sodium valproate or topiramate and any other drugs used specifically for migraine prophylaxis, for example beta-blockers, calcium channel blockers, tricyclic antidepressants, selective serotonin reuptake inhibitors
boolean
Unable to distinguish migraine headache from tension and other types of headache
boolean
Current history of psychiatric disorder requiring regular medication
boolean
Known history of alcohol abuse
boolean
Known clinically significant allergy or known hypersensitivity to drugs
boolean
History of a significant medical condition that may affect the safety of the patient or preclude adequate participation in the study
boolean
Pregnant or breast-feeding
boolean