Medication Overuse Headache
Medication overuse headache: when treatment becomes the problem
Medication overuse headache happens when headache medicine, taken too often, starts causing more headaches instead of fewer. It is real. It is treatable. It is not a sign that you did something wrong.
If your headache days have crept up even as you take more pain medicine, this may be why. The good news is that it can get better with the right plan.
Key takeaways
- Medication overuse headache (MOH) is headache on 15 or more days a month. It is caused by using acute headache medicine too often, for more than 3 months.¹
- The overuse threshold depends on the drug. Triptans, opioids, and combination pain relievers count as overuse at 10 or more days a month. Plain acetaminophen, aspirin, or NSAIDs count at 15 or more days a month.¹
- MOH affects roughly 1 to 2 percent of people.² It is the most common secondary headache disorder.³
- Treatment has three parts. Stop the overused medicine. Start an effective preventive treatment. Follow up closely with your clinician.⁴
- One large trial found that stopping the overused medicine and starting prevention together worked better than either step alone.⁵
- Newer migraine medicines called gepants work through a different pathway. They do not seem to cause medication overuse headache the way older options can.⁶
What is medication overuse headache?
Medication overuse headache is a headache that happens on 15 or more days a month. It develops in someone who already has a headache disorder, like migraine. It comes from using acute headache medicine too often, for more than 3 months.¹ Acute medicine means medicine you take to stop a headache that has already started. It is different from medicine you take daily to prevent one.
MOH does not feel different from your usual headache. It usually feels like your regular migraine attack or tension-type headache, just more often.² That overlap makes it confusing. People often keep taking more medicine, hoping it will help. But the medicine itself is feeding the cycle.
Here is how the cycle tends to build. Headaches become more frequent. You take medicine more often to keep up. Over time, each dose wears off faster. The next headache seems to come sooner.⁷ This is a real physical process. It is not a matter of willpower.
What causes it, and which medicines are involved?
Nearly any medicine used to stop a headache in the moment can lead to MOH if used too often. Some classes carry a higher risk. The overuse threshold is also different for each one.
These day counts add up across everything you take. They are not counted per medicine.⁸ Say you take a triptan 5 days a month and a combination pain reliever another 6 days. That is 11 days of acute medicine total, which crosses the threshold. Switching between drug types does not lower your risk. Your total use across all of them is what counts.
Caffeine-containing combination medicines carry a particular risk. Caffeine has real value for treating a migraine attack. But frequent use of caffeine pain relievers is especially linked to MOH.⁹ Most over-the-counter medicines are best kept to two days a week or fewer.
How do you know if you have it?
The clearest sign is a pattern. Headache on 15 or more days a month, along with frequent use of acute medicine, for more than 3 months.¹ A few other clues are worth watching for.
You may notice your usual medicine works less well than it used to. It might wear off faster than before. You may feel the next headache coming on as soon as one dose fades. You might also find yourself taking medicine on a schedule, out of worry, rather than only when pain is already there.
None of this means you did anything wrong. Most people develop MOH while trying, in a reasonable way, to manage frequent headache days. Often their headache disorder simply was not on an effective preventive plan.⁷ If this pattern sounds familiar, bring it to your headache specialist rather than managing it alone.
How is medication overuse headache treated?
Treatment usually rests on three parts working together. Stop the overused medicine. Start an effective preventive treatment. Stay in close contact with your clinician using a headache calendar. This combined approach can cut headache days by about half for many people. About 70 percent return to a less frequent headache pattern.⁴
A large randomized trial compared three strategies. One group stopped the overused medicine and started prevention right away. One group started prevention without stopping the medicine. One group stopped the medicine alone. All three approaches reduced headache days. But the group that did both together had the best odds of returning to a less frequent pattern, at about 74 percent. That compares with 60 percent and 42 percent in the other two groups.⁵
Stopping the overused medicine can happen gradually or all at once, depending on which medicine is involved. Triptans are often stopped right away. Opioids, barbiturate combinations, and medicines with a lot of caffeine are usually tapered slowly to ease withdrawal.⁴ Headaches often get worse for a week or two during this transition. Your clinician can offer a bridge medicine to help.
Most people manage this as outpatients, seeing their clinician regularly rather than staying in the hospital.⁴ Hospital care is sometimes needed for people overusing opioids or barbiturates, or when other health conditions make withdrawal riskier.
Relapse is common. Roughly 20 to 40 percent of people develop MOH again within a year.¹⁰ Staying on an effective preventive treatment and keeping regular follow-up visits are the best-known ways to lower that risk.
Which medicines are less likely to cause it?
Gepants are a newer class of migraine-specific medicine. They do not appear to cause medication overuse headache the way triptans, opioids, and combination pain relievers can.⁶ This matters for people who need frequent acute treatment and have struggled with MOH before.
Preventive treatments are the other side of this equation. You take them regularly to reduce how often attacks happen in the first place. Options include daily oral medicines like topiramate, onabotulinumtoxinA injections given every few months for chronic migraine, and CGRP monoclonal antibodies, medicines that block a protein involved in triggering attacks.⁶ A good preventive plan lowers how often you need acute medicine at all. That is the most lasting way to avoid MOH.
Breaking the cycle for good
Medication overuse headache can feel like a trap. The medicine that once helped now seems to make things worse. Stopping it feels risky when you are already in pain. But this cycle has a well-studied way out. Most people do improve with the right support.
The first step is naming the pattern. Track how many days a month you use any acute headache medicine, of any kind. Bring that count to your headache specialist. From there, a plan built around effective prevention and a supported medicine transition can help you get back to fewer, more manageable headache days.
Living with headache or migraine? The specialists at Haven Headache & Migraine Center are here to help. Book a virtual consultation.
Frequently asked questions
How many days a month can I take migraine medicine safely?
It depends on the medicine. Triptans, opioids, and combination pain relievers count as overuse at 10 or more days a month. Plain acetaminophen, aspirin, or NSAIDs count at 15 or more days a month.¹ Many clinicians suggest staying under 2 days a week as a simple rule.
Can over-the-counter medicine cause medication overuse headache?
Yes. Acetaminophen, aspirin, ibuprofen, and combination products like Excedrin can all lead to MOH if used too often. This is especially true for caffeine combinations.⁹ Being sold without a prescription does not make a medicine risk-free.
Will medication overuse headache go away if I stop the medicine?
Often, yes. It usually takes a few weeks and can involve a rough withdrawal period first.¹ Starting an effective preventive treatment at the same time gives you the best chance of lasting improvement.⁵
Is it my fault if I developed medication overuse headache?
No. MOH usually develops while someone is reasonably trying to manage frequent headache days. Often their headache disorder just was not on an effective preventive plan.⁷ It is a recognized medical condition with a clear treatment path, not a personal failing.
Do newer migraine medicines cause medication overuse headache?
Gepants are a newer class of migraine medicine, used for both acute and preventive treatment. They do not appear to cause MOH the way older options can.⁶ This makes them a useful option for people who need frequent treatment.
How long does it take to recover from medication overuse headache?
Many people see real improvement within a few months of stopping the overused medicine and starting prevention. One study found headache days dropped from 15 to 8 a month within 3 months of treatment.⁴ Staying on your preventive plan afterward helps keep that improvement going.
Medically reviewed by: Samantha Clem, PA-C, AQH, Haven Headache & Migraine Center
Peer reviewed by: Nada Hindiyeh, MD, Haven Headache & Migraine Center
References
- Headache Classification Committee of the International Headache Society. ICHD-3: 8.2 Medication-overuse headache (MOH). 2018. https://ichd-3.org/8-headache-attributed-to-a-substance-or-its-withdrawal/8-2-medication-overuse-headache-moh/
- Fischer MA, Jan A. Medication-Overuse Headache. StatPearls. Updated 2023. https://www.ncbi.nlm.nih.gov/books/NBK538150/
- World Health Organization. Headache disorders. https://www.who.int/news-room/fact-sheets/detail/headache-disorders
- American Headache Society. Treating Medication Overuse Headache. https://americanheadachesociety.org/research/library/treating-medication-overuse-headache
- Carlsen LN, Munksgaard SB, Nielsen M, et al. Comparison of 3 Treatment Strategies for Medication Overuse Headache: A Randomized Clinical Trial. JAMA Neurol. 2020;77(9):1069-1078. https://pmc.ncbi.nlm.nih.gov/articles/PMC7251504/
- MSD Manual Professional Edition. Medication Overuse Headache. https://www.msdmanuals.com/professional/neurologic-disorders/headache/medication-overuse-headache
- American Migraine Foundation. What Is Medication Overuse Headache? https://americanmigrainefoundation.org/resource-library/what-is-medication-overuse-headache/
- American Migraine Foundation. Medication Overuse Headache. https://americanmigrainefoundation.org/resource-library/medication-overuse-headache-3/
- American Migraine Foundation. OTC Migraine Medication. https://americanmigrainefoundation.org/resource-library/otc-migraine-treatment/
- Kebede YT, Mohammed BD, Tamene BA, Abebe AT, Dhugasa RW. Medication overuse headache: a review of current evidence and management strategies. Front Pain Res. 2023;4:1194134. https://www.frontiersin.org/journals/pain-research/articles/10.3389/fpain.2023.1194134/full
This article is for general education and is not medical advice. It is not a substitute for care from a qualified health professional. Always talk with your clinician before starting, stopping, or changing any treatment. If you have a sudden, severe headache, the worst headache of your life, or a headache with new symptoms like weakness, trouble speaking, or vision loss, seek emergency care right away.