Sarah W. has been using oral Imitrex (Sumatriptan) for management of migraine headaches. She reports nausea early in course of migraine, so doesn’t always take the Imitrex right away or breaks a tablet in half so it won’t upset her stomach. You are worried about treatment failure. All of the following are factors contributing to treatment failure except: O Taking an abortive medication too late • Taking a migraine specific agent • Taking a medication that is not well matched to disabling symptoms O Taking an inadequate dose of medication