When a migraine will not break, IV therapy gives the same drug classes straight into the vein, so absorption no longer decides whether they work. The mix is drawn from an anti-nausea agent, fluids, magnesium and an anti-inflammatory. Most people are here one to two hours.
If oral medication has failed, or you are vomiting, the problem is often not the drug — it is that the drug never got in.
Migraine slows gastric emptying (how fast the stomach empties). That is part of the disease, not a side effect of it. A tablet taken three hours into an attack can sit in the stomach largely unabsorbed. Vomiting removes the option entirely. Giving the same drug classes intravenously (into a vein) takes absorption out of the equation.
What should I do when a migraine lasts more than three days?
Get it treated that day. An attack that runs past 72 hours has its own diagnosis, status migrainosus, and by that point tablets have had their chance. If it feels like your usual migraine, only longer, this is exactly what IV migraine therapy is for. If it is different from your usual pattern — a new kind of pain, weakness, confusion, fever or a change in vision — that belongs in an emergency department; the list is in headache red flags.
Day three is also when people start doubling doses and stacking whatever is in the cupboard. One long attack handled that way is how a month of rebound starts, which is why the rescue should not come from the medicine cabinet.
What goes in
The combination is chosen for the attack rather than issued as a fixed recipe. But it is generally drawn from four components:
- An anti-nausea agent such as metoclopramide or prochlorperazine. These are not only for the nausea — the dopamine-blocking antiemetics have genuine anti-migraine activity. That is why they are a mainstay of acute treatment rather than an afterthought.
- Fluids, where vomiting or poor intake has left you dry. Hydration alone rarely aborts a migraine, and we will not tell you it does.
- Magnesium, which has its clearest evidence in migraine with aura and in people who are genuinely deficient.
- An anti-inflammatory such as ketorolac. In some cases a single dose of dexamethasone is added — given specifically to reduce the chance of the headache returning over the next day or two.
What does not go in
Opioids. For migraine they are close to the worst available option. They do not address the mechanism. They worsen the nausea. And they interact badly with the antiemetics that do help. They also cross into medication overuse at a low threshold — 10 days a month — and are associated with progression from episodic to chronic headache.
That is a clinical argument about primary headache, not a blanket position. Opioids remain appropriate in other conditions treated here, including head and neck cancer pain.
What the visit is like
You are in a chair, not a bed. An IV is placed, the infusion runs, and most people are here somewhere between one and two hours. Metoclopramide and prochlorperazine can cause restlessness in a minority of people. We watch for it and can treat it directly if it appears. You are not sedated and you can drive yourself home unless we tell you otherwise.
When it is the right call
- An attack that has not responded to your usual oral treatment
- Vomiting that makes oral treatment pointless
- An attack running into its second or third day
- Cover during withdrawal from an overused acute medication, where you need something that does not feed the cycle
That last use is underrated. Unwinding medication-overuse headache means stopping the offending drug while the withdrawal headache peaks. Having a way through that window is often what makes the difference between succeeding and giving up.
What it is not
It is not a preventive. It stops the attack in front of you. If you are having 15 or more headache days a month, the conversation shifts to prevention — see Botox for chronic migraine and headache prevention.
And it is not for cluster headache. That responds to high-flow oxygen, which works in minutes.
Common questions
Why not just take a stronger tablet?
Because the limiting factor is often absorption rather than potency (strength). Gastric emptying slows during migraine. So a stronger tablet can sit unabsorbed just as easily as a weaker one. See IV migraine therapy.
How long does it take?
Most people are here between one and two hours, in a chair rather than a bed. You are not sedated and can usually drive yourself home. See IV migraine therapy.
Will the headache come back the next day?
It can. Where recurrence is a pattern, a single dose of dexamethasone during the infusion is used specifically to reduce that risk. See IV migraine therapy.
Can I have this while withdrawing from painkillers?
Yes, and it is one of the better uses for it. That is because it breaks the acute headache without adding to the overuse. See medication-overuse headache.
When a migraine has run for days, IV migraine therapy in the office can end it without a night in the ER. It is the core of our same-day headache treatment.
Sources
- Headache Classification Committee of the International Headache Society. ICHD-3, 8.2 Medication-overuse headache. ichd-3.org
A note on coverage, and on timing. Same-day treatment and prior authorization do not run on the same clock. Many insurers take days to weeks to decide, and some acute headache treatments are not covered at all. Your headache will not wait for that process.
We will verify your benefits and, where a treatment needs prior authorization, we will attempt to obtain it. An authorization confirms that a service meets criteria for review — it is not a guarantee of payment, and no clinic can make that promise on your insurer’s behalf. Where something is unlikely to be covered, or cannot be certified in time to treat you today, we will tell you before we treat rather than after, so the decision is yours. Payment is due at the time of service.