Quick update:

DD went to the nurse with a headache again today but this time asked to go back to class after about 20 minutes. (Still got Tylenol...)

DH has decided to try the combo Alexsmom suggested! Aculady's explanation makes so much sense. Now to run to the healthfood store to get everything on the list. Crossing my fingers for him - he's been in a really awful migraine cycle lately and nothing is helping him.

Thanks forumites!