Amerge (Naratriptan) Drug Overview of Drug Interactions and Missed Dose for Patients and Caregivers at RxList

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May 24, 2012

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Migraine »

What is a migraine headache?

A migraine headache is a form of vascular headache. Migraine headache is caused by vasodilatation (enlargement of blood vessels) that causes the release of chemicals from nerve fibers that coil around the large arteries of the brain. Enlargement of these blood vessels stretches the nerves that coil around them and causes the nerves to release chemicals. The chemicals cause inflammation, pain, and further enlargement of the artery. The increasing enlargement of the arteries magnifies the pain.

Migraine attacks commonly activate the sympathetic nervous system in the body. The sympathetic nervous system is often thought of as the part of the nervous system that controls primitive responses to stress and pain, the so-called "fight or flight" response, and this activation causes many of the symptoms associated with migraine attacks; for example, the increased sympathetic nervous activity in the intestine causes nausea, vomiting,...

Read the Migraine article »

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Amerge Consumer (continued)

DRUG INTERACTIONS: See also Side Effects section.

Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.

This drug should not be taken with the following medication because very serious interactions may occur: sibutramine.

If you are currently using the medication listed above, tell your doctor or pharmacist before starting naratriptan.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: certain types of antidepressants (e.g., SSRIs such as fluoxetine/paroxetine/sertraline, NSRIs such as venlafaxine).

If you also take any ergotamine medication (e.g., dihydroergotamine or methysergide) or any other "triptan" drugs (e.g., zolmitriptan, rizatriptan), you will need to separate your naratriptan dose from your dose of these other medications in order to lessen the chance of serious side effects. Ask you doctor how long you should wait between your doses of these drugs.

Also report the use of drugs which might increase seizure risk (decrease seizure threshold) when combined with naratriptan such as isoniazid (INH), phenothiazines (e.g., thioridazine), theophylline, or tricyclic antidepressants (e.g., amitriptyline), among others. Consult your doctor or pharmacist for details.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly.

NOTES: Take this medication only as needed when a migraine occurs, as directed by your doctor. This medication should not be taken on a regular schedule. Never increase your dose of this medication or take it more often than prescribed by your doctor.

Certain foods/beverages or food additives (e.g., red wine, cheese, chocolate, monosodium glutamate) as well as some lifestyle patterns (e.g., irregular eating/sleeping habits, stress) may bring about a migraine headache. Avoiding these "triggers" may help decrease the frequency of migraine headaches. Consult your doctor for more details.

MISSED DOSE: Not applicable.

STORAGE: Store the US product at room temperature between 68 and 77 degrees F (20-25 degrees C) away from light and moisture.

Store the Canadian product below 86 degrees F (30 degrees C) away from light and moisture.

Do not store in the bathroom. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.