Stop the Excedrin by taking a caffeine pill right away when you feel a headache is coming. I may take it even at 6 pm or 8 if I had a stressed day . I believe the other medicine in Excedrin wore me down and triggers Migraines.All the drugs did.The less I take the better for me. Melatonin can be tricky too.Before I noticed it could even make my migraine worse if I take it after onset of headache.So now I try to get my caffeine pill taken and hour before I take melatonin do it can do it's job better blocking the adenosine.