Propranolol
"I never had "headache" in my life until high school, when I had my first migraine. Beyond the pain, it was completely debilitating; I lost my equilibrium, I was vomiting, had extreme light and sound sensitivity.  After nearly a decade of doctor visits, food/beverage intake tracking, blood tests, etc. without finding an answer, I was finally referred to a neurologist. I had been prescribed Imitrex (had just become available in pill form), but it was never in my system long enough to work for me. At this point, I was having approx. 3 migraines per week, some lasted 1 day, others lasted 3. I was prescribed propranolol 60mg daily for 6 months. I rarely have migraines anymore (only 1-3 per year)."