Migraine Headaches
Medications
Drugs are used to treat migraine symptoms after they have started (abortive drugs) as well as to prevent future attacks (preventive drugs). You may have to try several different drugs or types of drugs before you find the one that is right for you. Good communication with your doctor is important in this process.
Usually, your doctor will first prescribe a drug that causes the fewest side effects. Drugs may be prescribed based on the type of migraine that you experience. If your migraines are mild to moderate, you may need only a non-prescription drug to relieve your symptoms. However, if your migraines are moderate to severe and disabling, you may need a prescription migraine drug to treat your symptoms. If you experience frequent migraine attacks, your doctor may suggest a preventive drug.
Medication Choices
Abortive drugs—used to stop a migraine attack—include:
- Non-steroidal anti-inflammatory drugs (NSAIDs), such as ASA or ibuprofen, which may be tried first to reduce migraine symptoms.
- Triptans (serotonin receptor agonists). These are usually the first type of prescription medicine tried to quickly stop acute migraine attacks.
- Ergotamine derivatives, such as Cafergot, although these medications may not be as effective as triptans for treating migraines.
- Antinausea drugs (such as prochlorperazine or metaclopramide) may also be prescribed alone to treat migraine symptoms.
Preventive drugs—used to avoid or reduce the frequency of migraine attacks—include:
- Beta-blockers, which relax blood vessels.
- Calcium channel blockers, which reduce the amount of narrowing (constriction) of the blood vessels.
- Antidepressants, such as amitriptyline, a tricyclic antidepressant, which has been shown to be effective in preventing migraines.5
- Some anticonvulsants (such as topiramate) that are approved by Health Canada for preventing migraines.
Some small studies suggest that the angiotensin-converting enzyme (ACE) inhibitor lisinopril and the angiotensin receptor blocker (ARB) candesartan reduce the frequency of migraine headaches. However, more research is needed.6
Antinausea drugs (such as prochlorperazine or metaclopramide) are prescribed along with abortive drugs. Antinausea drugs may also be prescribed alone to treat migraine symptoms.
What To Think About
Health Canada and the FDA have issued warnings about taking triptans, used for migraines, with SSRIs (selective serotonin reuptake inhibitors) or SNRIs (selective serotonin/norepinephrine reuptake inhibitors). Taking these medicines together can cause a serious condition called serotonin syndrome.
It may take several attempts with different drugs before the right one or combination of drugs is found. Researchers now recommend taking a non-steroidal anti-inflammatory drug (NSAID), such as ASA or ibuprofen, to reduce headache pain before trying a prescription migraine drug, which may have more side effects than an NSAID.5
If you experience increased nausea or vomiting as a side effect of a migraine drug, your doctor may also prescribe an antinausea drug, such as prochlorperazine or metoclopramide, to reduce these symptoms.
Overuse of migraine drugs or pain relievers can cause rebound headaches. Rebound headaches are different from migraine headaches. They are usually triggered after pain medicine has worn off, prompting you to take another dose. Eventually you get a headache whenever you stop taking the drug. Be sure to take your migraine medicine only as prescribed by your doctor.
Anticonvulsants may increase the risk of suicide and suicidal thoughts. It is not recommended that people stop using these medicines. Instead, people who take anticonvulsant medicine should be watched closely for warning signs of suicide. People who take anticonvulsant medicine and who are worried about this side effect should talk to a doctor.
For more information, see:
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| Author: | Douglas Dana Monica Rhodes | Last Updated: August 21, 2007 |
| Medical Review: | Anne C. Poinier, MD - Internal Medicine Colin Chalk, MD, CM, FRCPC - Neurology | |
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