Generic Name: sumatriptan (SOO-ma-TRIP-tan)
Brand Name: Imitrex
Imitrex tablets are used for:
The treatment of migraine headaches with or without aura (eg, flashing lights, wavy lines, dark spots). It may also be used for other conditions as determined by your doctor.
Imitrex tablets are a serotonin 5-HT1 receptor agonist ("triptan"). It works by narrowing blood vessels in the brain, which helps to relieve migraines.
Do NOT use Imitrex tablets if:
- you are allergic to any ingredient in Imitrex tablets
- you have a history of ischemic heart disease (eg, angina, heart attack), coronary artery disease (CAD), other moderate to severe heart problems, certain types of irregular heartbeat (eg, Wolff-Parkinson-White syndrome), brain blood vessel disease (eg, stroke, transient ischemic attack), or other blood vessel disease (eg, Raynaud syndrome, ischemic bowel disease)
- you have uncontrolled high blood pressure or severe liver problems
- you have certain types of migraines (eg, hemiplegic, basilar)
- you are taking or have taken a monamine oxidase inhibitor (MAOI) (eg, phenelzine) within the past 14 days
- you have used certain other migraine medicines within the past 24 hours (eg, an ergot derivative [eg, dihydroergotamine, methysergide], another serotonin 5-HT1 receptor agonist [eg, eletriptan, rizatriptan])
Contact your doctor or health care provider right away if any of these apply to you.
Before using Imitrex tablets:
Some medical conditions may interact with Imitrex tablets. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have a history of liver or kidney problems, seizures (eg epilepsy), heart problems, or other types of headaches (eg, cluster headaches)
- if you have shortness of breath, chest pain, or a history of high blood pressure, heart attack, stroke, high cholesterol, diabetes, or smoking
- if you are a woman who is past menopause
- if you are a man who is older than 40 years old
- if you are very overweight
- if a family member has had heart disease or a stroke
Some MEDICINES MAY INTERACT with Imitrex tablets. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Selective serotonin reuptake inhibitors (SSRIs) (eg, fluoxetine), serotonin-norepinephrine reuptake inhibitors (SNRIs) (eg, duloxetine), or sibutramine because the risk of a serious side effect called serotonin syndrome may be increased. Symptoms of serotonin syndrome may include mental or mood changes, hallucinations, fast heartbeat, fever, loss of coordination, muscle spasms, increased sweating, nausea, vomiting, or diarrhea
- MAOIs (eg, phenelzine) because they may increase the risk of Imitrex tablets's side effects
- Ergot derivatives (eg, dihydroergotamine, methysergide) or other serotonin 5-HT1 receptor agonists (eg, eletriptan, rizatriptan) because the risk of their side effects may be increased by Imitrex tablets
This may not be a complete list of all interactions that may occur. Ask your health care provider if Imitrex tablets may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use Imitrex tablets:
Use Imitrex tablets as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- An extra patient leaflet is available with Imitrex tablets. Talk to your pharmacist if you have questions about this information.
- Take Imitrex tablets by mouth with or without food.
- Swallow Imitrex tablets whole. Do not break, crush, or chew before swallowing.
- It is best to take a dose of Imitrex tablets as soon as you notice symptoms of a migraine attack.
- If your migraine symptoms go away and then come back, or if you have a partial response to the first dose, you may take a second dose as directed by your doctor. Wait at least 2 hours between doses.
- If your symptoms do not improve after the first dose, do not take a second dose for the same attack. Contact your doctor.
- Do not take more than the amount prescribed by your doctor in a 24-hour period or treat more than 4 headaches within 30 days without checking with your doctor.
- If you miss a dose of Imitrex tablets and you still have a headache, follow your doctor's dosing instructions. Contact your doctor immediately if you are unsure of what to do if you miss a dose. Do not take Imitrex tablets more often than prescribed. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Imitrex tablets.
Important safety information:
- Imitrex tablets may cause drowsiness or dizziness. These effects may be worse if you take it with alcohol or certain medicines. Use Imitrex tablets with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Overuse of Imitrex tablets can cause your headache to become worse. Do NOT take more than the recommended dose or use more often than prescribed without checking with your doctor.
- Rarely, serious and sometimes fatal heart problems (eg, heart attack, irregular heartbeat) have happened within a few hours of using Imitrex tablets. Contact your doctor at once if fast or irregular heartbeat; chest, throat, jaw, or neck tightness, pain, pressure, or heaviness; breaking out in a cold sweat; shortness of breath; numbness or tingling of an arm or leg; severe stomach pain, dizziness, or vomiting; or fainting occur. Discuss any questions or concerns with your doctor.
- Serotonin syndrome is a possibly fatal syndrome that can be caused by Imitrex tablets. Your risk may be greater if you take Imitrex tablets with certain other medicines (eg, SSRIs, SNRIs). Symptoms may include agitation; confusion; hallucinations; coma; fever; fast or irregular heartbeat; tremor; excessive sweating; and nausea, vomiting, or diarrhea. Contact your doctor at once if you have any of these symptoms.
- Serious and sometimes fatal brain blood vessel problems like stroke have rarely happened with Imitrex tablets. Contact your doctor at once if you have confusion, one-sided weakness, or speech or vision changes.
- Imitrex tablets should not be used to prevent or reduce the number of migraine headaches you have. If you have a headache that is different than your usual migraine headaches, check with your doctor before using Imitrex tablets.
- Severe and sometimes fatal allergic reactions have rarely happened. Discuss any questions or concerns with your doctor.
- You will need to check your blood pressure often. Talk with your doctor.
- Lab tests, including heart function tests, may be performed while you use Imitrex tablets. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
- Use Imitrex tablets with caution in the ELDERLY; the risk of serious side effects (eg, heart problems, high blood pressure) may be increased.
- Imitrex tablets are not approved for use in CHILDREN younger than 18 years old. Talk with the doctor.
- PREGNANCY and BREAST-FEEDING: It is not known if Imitrex tablets can cause harm to the fetus. If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Imitrex tablets while you are pregnant. Imitrex tablets are found in breast milk. If you are or will be breast-feeding while you use Imitrex tablets, check with your doctor. Discuss any possible risks to your baby.
Possible side effects of Imitrex tablets:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur:
Dizziness; drowsiness; sick feeling; tiredness; warm/hot sensation.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody diarrhea; burning or aching in your feet or toes; burning, numbness, or tingling; constipation; diarrhea; fainting; feeling of heaviness or tightness in your leg muscles; fever; hearing problems; leg cramps; seizures; severe or persistent headache, dizziness, nausea, or vomiting; severe stomach pain; very cold or blue fingers or toes; vision changes or loss of vision; weight loss; wheezing.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
If OVERDOSE is suspected:
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately.Proper storage of Imitrex tablets:
Store Imitrex tablets between 36 and 86 degrees F (2 and 30 degrees C). Store away from heat, moisture, and light. Do not freeze. Do not store at temperatures above 86 degrees F (30 degrees C). Do not store in the bathroom. Keep Imitrex tablets in the case provided. Throw away expired medicine as directed by your doctor (the expiration date is printed on the treatment pack). Keep Imitrex tablets out of the reach of children and away from pets.
- If you have any questions about Imitrex tablets, please talk with your doctor, pharmacist, or other health care provider.
- Imitrex tablets are to be used only by the patient for whom it is prescribed. Do not share it with other people.
- If your symptoms do not improve or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information should not be used to decide whether or not to take Imitrex tablets or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Imitrex tablets. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Imitrex tablets. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your health care provider for complete information about the risks and benefits of using Imitrex tablets.
Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.