cluster headaches
"Was diagnosed with chronic Cluster Headaches at the age of 18, was finally put on verapamil and as long as I stick to the schedule of 2x240mg verapamil SR daily (one in morning, one at night) I have gone from 3-5 severe headaches a day to 1 or 2 less severe headaches per week! This medicine makes my life tolerable and livable again. It really is an amazing medicine, I often can't believe how effective it is and I really fear that it might stop working for me one day but 3 years in and still OK."