MSRA-1599

A 35-year-old woman presents to her General Practitioner (GP) after experiencing daily headaches for the past week. She is usually healthy but drinks three cups of coffee a day. She describes sudden onset of severe, unilateral periorbital pain and tearing of the eye. The attacks last around 30 minutes and have all occurred in the late afternoon.
What is the most suitable treatment to be administered to this patient during an acute episode of headache?
Select the MOST appropriate treatment from the options below.