It is thought that some chemicals in the brain increase in activity, and as a result parts of the brain then send out confused signals which result in the symptoms of migraine. Why people with migraine should develop these chemical changes is also not clear. Many migraine attacks occur for no apparent reason, but for some people there may be things which trigger an attack, like certain foods or drinks.
Rizatriptan belongs to a class of medicines known as 5HT 1 -receptor agonists. They are also known simply as triptans. Triptans work by stimulating the receptors of a natural substance in the brain called serotonin or 5HT.
This eases the symptoms of migraine. Rizatriptan is effective in relieving migraine attacks once the headache phase has started. It does not help prevent migraine headaches from developing. Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking rizatriptan it is important that your doctor or pharmacist knows:.
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with rizatriptan. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
If you experience any other symptoms that you think may be due to the medicine, speak with your doctor or pharmacist for advice. Never take more than the prescribed dose. If you suspect that you or someone else might have taken an overdose of this medicine, go to the accident and emergency department of your local hospital.
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:. Take this medicine only as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. Using too much rizatriptan may increase the chance of side effects.
Do not use this medicine for a headache that is not a migraine headache. Talk to your doctor about what to do for regular headaches. To relieve your migraine as soon as possible, use rizatriptan as soon as the headache pain begins. Even if you get warning signals of a coming migraine an aura , you should wait until the headache pain starts before using rizatriptan. Lying down in a quiet, dark room for a while after you use this medicine may help relieve your migraine.
Ask your doctor ahead of time about any other medicine you may take if rizatriptan does not work. After you take the other medicine, check with your doctor as soon as possible. Headaches that are not relieved by rizatriptan are sometimes caused by conditions that need other treatment. If you feel much better after a dose of rizatriptan, but your headache comes back or gets worse after a while, adults may use one additional dose of rizatriptan 2 hours after the first dose.
Do not use more than 2 doses in any hour period. Do not use this medicine for more than 10 days in any day period, unless your doctor tells you to. Keep the orally disintegrating tablet in the blister pack inside the outer foil pouch until you are ready to take the medicine. Make sure your hands are dry and peel open the blister to remove the tablet. Place the tablet on your tongue and let it dissolve. You do not need to drink water to swallow the dissolved tablet.
This medicine comes with a patient information leaflet. It is very important that you read and understand this information. Be sure to ask your doctor about anything you do not understand. The dose of this medicine will be different for different patients.
Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing. It is very important that your doctor check the progress of you or your child at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you or your child should continue to take it.
You should not take this medicine if you or your child have used other triptan or ergot-type migraine medicines within the past 24 hours.
Some examples of ergot-type medicines are dihydroergotamine D. Check with your doctor if you or your child used this medicine and your migraine did not go away, or if your migraine got worse or started occurring more often.
This medicine may increase your risk of having abnormal heart rhythm, heart attack, angina, or stroke. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below.
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