Migraine Relief Clinics Recommend Migravent as #1 Supplement to Support Optimal Cranial Comfort & Health, w/Vitamin B2, Riboflavin, Magnesium, Coenzyme Q10, PA-Free Butterbur.About this itemMIGRAINE PAIN-FREE SUPPORT – Migravent is recommended by Migraine Pain Relief Clinics to use a Migraine Supplement. Throughout the USA and was proudly featured in the Johns Hopkins University Headache Clini..