July 26, 2016
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(naratriptan hydrochloride) Tablets

Read this Patient Information before you start taking AMERGE and each time you get a refill. There may be new information. This information does not take the place of talking with your healthcare provider about your medical condition or treatment.

What is the most important information I should know about AMERGE?

AMERGE can cause serious side effects, including:

Heart attack and other heart problems. Heart problems may lead to death.

Stop taking AMERGE and get emergency medical help right away if you have any of the following symptoms of a heart attack:

  • discomfort in the center of your chest that lasts for more than a few minutes, or that goes away and comes back
  • severe tightness, pain, pressure, or heaviness in your chest, throat, neck, or jaw
  • pain or discomfort in your arms, back, neck, jaw, or stomach
  • shortness of breath with or without chest discomfort
  • breaking out in a cold sweat
  • nausea or vomiting
  • feeling lightheaded

AMERGE is not for people with risk factors for heart disease unless a heart exam is done and shows no problem. You have a higher risk for heart disease if you:

What is AMERGE?

AMERGE is a prescription medicine used to treat acute migraine headaches with or without aura in adults who have been diagnosed with migraine headaches.

AMERGE is not used to prevent or decrease the number of migraine headaches you have.

AMERGE is not used to treat other types of headaches such as hemiplegic migraines (that make you unable to move on one side of your body) or basilar migraines (rare form of migraine with aura).

It is not known if AMERGE is safe and effective to treat cluster headaches.

It is not known if AMERGE is safe and effective in children younger than 18 years of age.

Who should not take AMERGE?

Do not take AMERGE if you have:

  • heart problems or a history of heart problems
  • narrowing of blood vessels to your legs, arms, stomach, or kidney (peripheral vascular disease)
  • uncontrolled high blood pressure
  • severe kidney problems
  • severe liver problems
  • hemiplegic migraines or basilar migraines. If you are not sure if you have these types of migraines, ask your healthcare provider.
  • had a stroke, transient ischemic attacks (TIAs), or problems with your blood circulation
  • taken any of the following medicines in the last 24 hours:
    • almotriptan (AXERT®)
    • eletriptan (RELPAX®)
    • frovatriptan (FROVA®)
    • rizatriptan (MAXALT®, MAXALT-MLT®)
    • sumatriptan (IMITREX®, SUMAVEL® DosePro®, ALSUMA®)
    • sumatriptan and naproxen (TREXIMET®)
    • ergotamines (CAFERGOT®, ERGOMAR®, MIGERGOT®)
    • dihydroergotamine (D.H.E. 45®, MIGRANAL®)
      Ask your healthcare provider if you are not sure if your medicine is listed above.
  • an allergy to naratriptan or any of the ingredients in AMERGE. See the end of this leaflet for a complete list of ingredients in AMERGE.

What should I tell my healthcare provider before taking AMERGE?

Before you take AMERGE, tell your healthcare provider about all of your medical conditions, including if you:

  • have high blood pressure
  • have high cholesterol
  • have diabetes
  • smoke
  • are overweight
  • have heart problems or family history of heart problems or stroke
  • have kidney problems
  • have liver problems
  • are not using effective birth control
  • become pregnant while taking AMERGE
  • are breastfeeding or plan to breastfeed. It is not known if AMERGE passes into your breast milk. Talk with your healthcare provider about the best way to feed your baby if you take AMERGE.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Using AMERGE with certain other medicines can affect each other, causing serious side effects.

Especially tell your healthcare provider if you take anti-depressant medicines called:

  • selective serotonin reuptake inhibitors (SSRIs)
  • serotonin norepinephrine reuptake inhibitors (SNRIs)
  • tricyclic antidepressants (TCAs)
  • monoamine oxidase inhibitors (MAOIs)

Ask your healthcare provider or pharmacist for a list of these medicines if you are not sure.

Know the medicines you take. Keep a list of them to show your healthcare provider or pharmacist when you get a new medicine.

How should I take AMERGE?

  • Certain people should take their first dose of AMERGE in their healthcare provider's office or in another medical setting. Ask your healthcare provider if you should take your first dose in a medical setting.
  • Take AMERGE exactly as your healthcare provider tells you to take it.
  • Your healthcare provider may change your dose. Do not change your dose without first talking with your healthcare provider.
  • Take AMERGE with water or other liquids.
  • If you do not get any relief after your first AMERGE tablet, do not take a second tablet without first talking with your healthcare provider.
  • If your headache comes back or you only get some relief from your headache, you can take a second tablet 4 hours after the first tablet.
  • Do not take more than a total of 5 mg of AMERGE in a 24-hour period.
  • Some people who take too many AMERGE tablets may have worse headaches (medication overuse headache). If your headaches get worse, your healthcare provider may decide to stop your treatment with AMERGE.
  • If you take too much AMERGE, call your healthcare provider or go to the nearest hospital emergency room right away.
  • You should write down when you have headaches and when you take AMERGE so you can talk with your healthcare provider about how AMERGE is working for you.

What should I avoid while taking AMERGE?

AMERGE can cause dizziness, weakness, or drowsiness. If you have these symptoms, do not drive a car, use machinery, or do anything where you need to be alert.

What are the possible side effects of AMERGE?

AMERGE may cause serious side effects. See “What is the most important information I should know about AMERGE?”

These serious side effects include:

  • changes in color or sensation in your fingers and toes (Raynaud's syndrome)
  • stomach and intestinal problems (gastrointestinal and colonic ischemic events). Symptoms of gastrointestinal and colonic ischemic events include:
    • sudden or severe stomach pain
    • stomach pain after meals
    • weight loss
    • nausea or vomiting
    • constipation or diarrhea
    • bloody diarrhea
    • fever
  • problems with blood circulation to your legs and feet (peripheral vascular ischemia). Symptoms of peripheral vascular ischemia include:
    • cramping and pain in your legs or hips
    • feeling of heaviness or tightness in your leg muscles
    • burning or aching pain in your feet or toes while resting
    • numbness, tingling, or weakness in your legs
    • cold feeling or color changes in 1 or both legs or feet
  • medication overuse headaches. Some people who use too many AMERGE tablets may have worse headaches (medication overuse headache). If your headaches get worse, your healthcare provider may decide to stop your treatment with AMERGE.
  • serotonin syndrome. Serotonin syndrome is a rare but serious problem that can happen in people using AMERGE, especially if AMERGE is used with anti-depressant medicines called SSRIs, SNRIs, TCAs, or MAOIs. Call your healthcare provider right away if you have any of the following symptoms of serotonin syndrome:
    • mental changes such as seeing things that are not there (hallucinations), agitation, or coma
    • fast heartbeat
    • changes in blood pressure
    • high body temperature
    • tight muscles
    • trouble walking

The most common side effects of AMERGE include:

  • tingling or numbness in your fingers or toes
  • dizziness
  • warm, hot, burning feeling to your face (flushing)
  • discomfort or stiffness in your neck
  • feeling weak, drowsy, or tired

Tell your healthcare provider if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of AMERGE. For more information, ask your healthcare provider or pharmacist.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store AMERGE?

Store AMERGE between 68°F and 77°F (20°C and 25°C).

Keep AMERGE and all medicines out of the reach of children.

General information about the safe and effective use of AMERGE.

Medicines are sometimes prescribed for purposes other than those listed in Patient Information leaflets. Do not use AMERGE for a condition for which it was not prescribed. Do not give AMERGE to other people, even if they have the same symptoms you have. It may harm them.

This Patient Information leaflet summarizes the most important information about AMERGE. If you would like more information, talk with your healthcare provider.

You can ask your healthcare provider or pharmacist for information about AMERGE that is written for healthcare professionals.

For more information, go to www.gsk.com or call 1-888-825-5249.

What are the ingredients in AMERGE?

Active ingredient: naratriptan hydrochloride

Inactive ingredients: croscarmellose sodium, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, triacetin, titanium dioxide

2.5-mg tablets also contain iron oxide yellow and indigo carmine aluminum lake (FD&C Blue No. 2) for coloring.

This Patient Information has been approved by the U.S. Food and Drug Administration.

Last reviewed on RxList: 3/21/2016
This monograph has been modified to include the generic and brand name in many instances.

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Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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