I have been having migraine headaches for 20 yrs and typically they will resolve after 1-2 Excedrine for migraine. Over the past year they have been more frequent perhaps 20 days /month. I may have a headache a headache pain 8/10 3x mo the rest are 3-4/10. Usually 1 take 1-2 Excederine and rarely 4 will this be enough to result in rebound headaches. and what do you think of Apple cider vinegar. By the way have been to 3 neurologist in 6 yrs no relief. Thanks