I feel megrain what can I take?

Migraine. If you're not going to see a doctor, the best over-the-counter medication you can take is Ibuprofen (4 of the 200 mg tablets). An alternative is excedrin-migraine. If you see a doctor, there are several more effective medications you can try, including imitrex, topamax, (topiramate) and an anti-nausea medication.