S? ph?i h?p c?a các th?o d??c này h? tr? ?i?u tr? c?c t?t cho b?nh nhân m?t ng? mãn tính ch? sau three tháng s? d?ng.Even when the prophylactic servicing therapy is successful and properly tolerated, it ought to be interrupted after six months and it should be re-initiated only if the patient relapses.Migrin can be a selective calcium entry b