1. Currently (or within the last 4 weeks) using any medication or device with migraine preventive properties: i.e. topiramate, amitriptyline, nortriptyline, propranolol, metoprolol, sodium valproate, gabapentin, flunarizine, methysergide, riboflavin, butterbur, coenzyme Q10, or the Cefaly TENS device. For onabotulinum toxin, they will have to have been off it for at least three months