I have to mention something here about a new headache reliever I have recently found.
Gatorade!!! I particularly like the low-calorie G2. I swear I read this on one of those crazy email forwards about household tips. I gave it a shot and have noticed I get some relief if I drink a Gatorade when I have a headache. I get migraines too and while it doesn't get rid of the headache all together - it does seem to help! Give it a try :)