I have been a migraine sufferer for many years. My neurologist prescribed 20 mg of propranolol at night and 20mg in the morning. This never really worked for me and the morning dose made me very tired all day long.
I recently switched to 40mg about an hour before going to bed and nothing in the morning.
My results were immediate. Not even a hint of a headache for nearly 2 weeks and I am no longer tired during the day.
I was getting as many as five migraines a week always about 2:00am and above my left eye.
I am elated that such a minor change has made such a difference.