The investigators propose a study of patients with migraine (episodic) with or without aura, according to the criteria of the International Headache Society (IHS) 2004. This will be a randomized clinical trial, prospective, double-blind, placebo-controlled, comparing the efficacy of melatonin 3 mg and amitriptyline 25 mg for migraine prevention. The length of the inclusion of the study will be 24 months. This study's general objective is: to evaluate the effectiveness of melatonin in the preventive treatment of migraine and compare it to placebo and amitriptyline.
