Naproxen vs. Indomethacin for Migraine: NSAID Comparison

Naproxen and indomethacin are both NSAIDs, both used in headache treatment, and that is roughly where the similarity ends. Naproxen is the workhorse for ordinary migraine. Indomethacin is the heavier-hitter usually held in reserve for a specific subset of headache disorders where it does something the other NSAIDs cannot. Mixing the two up — or assuming they are interchangeable — leads to over-treatment of one kind of headache and under-treatment of another.

This piece walks through how the two drugs differ, where each one earns its place, and what the trade-offs look like.

The basic distinction

Naproxen is a long-acting non-selective NSAID used for routine migraine treatment, both alone and combined with a triptan. It is well-tolerated for short courses, available over the counter, and the first-line NSAID in most headache treatment plans.

Indomethacin is also a non-selective NSAID, but it has unique properties at the central-nervous-system level. It is the defining treatment for a small group of headache disorders called the "indomethacin-responsive headaches" — paroxysmal hemicrania, hemicrania continua, and (less reliably) primary cough headache, primary exertional headache, primary stabbing headache, and hypnic headache. For these disorders, response to indomethacin is so specific that it is part of the diagnostic criteria. For ordinary migraine, indomethacin is not first-line.

How they differ

Property	Naproxen	Indomethacin
Drug class	Propionic acid NSAID	Indole acetic acid NSAID
Half-life	12–17 hours	4–6 hours (varies)
CNS penetration	Modest	High
Typical migraine dose	500–825 mg at onset	25–50 mg three times daily
Side-effect profile	Moderate	Heavier — more GI, more CNS effects
OTC availability	Yes (naproxen sodium 220 mg)	Prescription only
First-line for ordinary migraine	Yes	No
First-line for hemicrania continua	No	Yes — diagnostic

The high central-nervous-system penetration of indomethacin is what makes it useful for the indomethacin-responsive headaches but also drives a heavier side-effect load — dizziness, mental cloudiness, and headache (paradoxically) are all more common with indomethacin than with naproxen.

When naproxen is the right choice

For ordinary migraine, naproxen is almost always the better NSAID. Specifically:

• Episodic migraine with attacks one to a few times per month.
• Chronic migraine as the NSAID component of an abortive plan that also includes a triptan or gepant.
• Menstrual migraine as short-course mini-prophylaxis around the high-risk window.
• Migraine recurrence prevention when paired with a triptan that wears off too fast.

You would not use indomethacin for any of these as a default. It is more side-effect-heavy than naproxen and offers no advantage for migraine specifically.

When indomethacin is the right choice

There are three settings where indomethacin earns its place:

1. Diagnosing hemicrania continua or paroxysmal hemicrania. Both are uncommon primary headache disorders characterized by one-sided pain. The defining feature is that they respond completely and rapidly to indomethacin and to no other treatment. Headache specialists often run a structured "indotest" — escalating doses of indomethacin over a week or two — to confirm the diagnosis. A complete response confirms it.

2. Treating hemicrania continua or paroxysmal hemicrania long-term. Once the diagnosis is confirmed, indomethacin remains the treatment, typically at the lowest dose that controls the symptoms (often 25 to 75 mg daily, split into two or three doses). This is one of the few headache treatments where the same drug is both diagnostic and therapeutic.

3. Treating other indomethacin-responsive headaches. Primary stabbing headache, primary cough headache, primary exertional headache, and hypnic headache all respond to indomethacin in many cases, though the response is less universal than for hemicrania continua.

A general migraine attack is not on this list. If someone is taking indomethacin for typical migraine and getting some relief, it is mostly the generic NSAID effect — naproxen would do the same work with a better side-effect profile.

Side-effect comparison

Indomethacin is generally less well-tolerated than naproxen:

• GI side effects. Indomethacin has a higher rate of dyspepsia, ulceration, and bleeding than naproxen.
• CNS side effects. Indomethacin commonly causes dizziness, lightheadedness, and a "spaced out" feeling. Frontal headache as a side effect of indomethacin is genuinely common. Naproxen has much less of this.
• Renal effects. Comparable per dose, both with the standard NSAID kidney risks.
• Cardiovascular risk. Indomethacin carries a higher cardiovascular event rate than naproxen.

Because of the heavier side-effect load, indomethacin used long-term is usually paired with a proton-pump inhibitor for GI protection, and sometimes with a stepwise dose-reduction strategy to find the lowest effective dose.

Drug interactions

Both have the standard NSAID interactions — additive bleeding risk with anticoagulants, reduced antihypertensive effect of ACE inhibitors and ARBs, raised lithium levels, additive GI bleeding risk with SSRIs. Indomethacin has one extra wrinkle: it can interact more strongly with methotrexate, increasing methotrexate toxicity.

Practical decision tree

The simplified version of how a headache specialist picks between them:

1. Is this routine migraine? Use naproxen. Or sumatriptan plus naproxen.
2. Is this a one-sided continuous or paroxysmal pain that does not look like ordinary migraine? Trial indomethacin as both diagnosis and treatment.
3. Does the patient have a confirmed indomethacin-responsive headache disorder? Use indomethacin long-term at the lowest effective dose, with GI protection.
4. Has naproxen failed for ordinary migraine? Switch to a different NSAID like ibuprofen, or step up to a triptan combination — not to indomethacin.

Where pressure tracking fits

For people with weather-triggered migraines specifically, naproxen is almost always the right NSAID. The longer half-life means one dose at first symptom covers most of the attack. Pressure Pal works as a migraine tracker app that flags barometric pressure changes ahead of time, and logging which attacks respond well to naproxen helps you build a clearer picture of where the NSAID alone is enough and where you need a triptan combination on top.