Headache behind right eye?

I recently started an Adderall IR prescription and after one week, have begun to get a constant headache behind my right eye/eyebrow. I take 15mg. in the morning and a second dose around 2:00pm. The headache comes in the morning about an hour after waking up and goes away about an hour before bed. Other medication I take includes Allegra, Centrum Multivitamin and a Once-A-Day 250mg Magnesium supplement. Any idea what is causing the headache or a possible source of relief? 600mg of Ibuprofen every 6 hours doesn't work. Thanks