Each individual DHE (dihydroergotamine) infusion takes about one hour, but the full treatment protocol spans three to five days as an inpatient. Most people searching this question have been told they need a DHE infusion for a prolonged, stubborn migraine that hasn’t responded to other treatments. Here’s what to expect from start to finish.
How Long Each Infusion Takes
A single dose of DHE is mixed into a bag of saline and dripped through an IV over roughly one hour. You’ll also receive an anti-nausea medication at least 30 minutes before each dose, so the total time commitment per round is closer to 90 minutes. Between doses, you’re resting in your hospital room, and the next dose comes eight hours later.
The Full Treatment Timeline
The standard protocol, often called the Raskin protocol, follows a specific escalation schedule. On day one, your first dose is a half-strength test dose (0.5 mg) to make sure your body tolerates the medication. If that goes well, a second dose follows about eight hours later at a slightly higher strength (0.75 mg). From day two onward, you receive the full 1 mg dose every eight hours, three times a day.
This continues for up to five days. The goal is either complete relief from your headache or reaching a cumulative total of about 11 mg across all doses, whichever comes first. That works out to roughly 12 total infusions over the course of the admission. Some people break their headache cycle in two or three days and go home early. Others need the full course.
Why It Requires a Hospital Stay
DHE infusions are almost always done as an inpatient because of the every-eight-hours dosing schedule and the need for monitoring. The medication works by tightening blood vessels in the brain and calming overactive pain signaling along the trigeminal nerve, which is the main nerve involved in migraine. That vascular effect means your medical team wants to keep an eye on how you respond, particularly during the first few doses when the strength is being ramped up.
Some headache centers do offer abbreviated outpatient versions with fewer doses, but the classic multi-day inpatient protocol remains the most common approach for breaking a prolonged migraine cycle.
What the Experience Feels Like
Nausea is the most common side effect, which is why you get anti-nausea medication before every single dose. Even with that pretreatment, some people still feel queasy. Leg cramping is the other frequently reported issue. In one study of 48 patients, about 35% needed their infusion rate slowed because of cramping. If that happens to you, the nursing team can simply adjust the drip speed.
Between infusions, you’re free to sleep, read, watch TV, or walk around. The eight-hour gaps mean a good portion of the hospital stay is waiting. Many patients describe the experience as boring more than anything else, punctuated by the 90-minute windows around each dose.
What to Expect Afterward
The treatment endpoint is straightforward: either your headache is gone or you’ve hit the maximum cumulative dose. Most protocols aim for complete headache freedom before discharge. Once treatment wraps up, you can typically go home the same day your final dose is given. Some residual fatigue and mild nausea can linger for a day or two after discharge, but there’s no extended recovery period. Most people return to normal activities within a few days of leaving the hospital.
Your neurologist will likely have a plan in place for preventive medications to start after the infusion, since the goal of DHE is to break the current cycle, not to prevent future episodes on its own.