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What is Imitrex?

Imitrex containing the medication sumatriptan is a headache medication used to treat migraine medications. Sumatriptan reduces substances in the body which can trigger headache pain, nausea, light and sound sensitively and other migraine symptoms. Imitrex works by affecting serotonin which narrows blood vessels around the brain. Imitrex will treat migraine headaches but will not prevent them or reduce the number of attacks. It should only be used to treat headaches confirmed by a doctor as a migraine and not for tension headaches or headaches which cause a loss of movement on one side of your body.

Always read the patient information and instructions carefully before using this medication.

  • Imitrex should be taken orally and can be taken with or without food at the first sign of a migraine.
  • If there is no improvement to your symptoms, you should not take more doses of this medication. If your symptoms are partly relieved or if your headache returns, then you can take another dose at least two hours after the initial dose. Do not take more than 200mg within a 24 hour period.
  • Your Imitrex dosage is based on your medical condition and your response to treatment. Do not change your dosage or the frequency you take this medication unless advised by a doctor.
  • If you are taking Imitrex as a backup for a sumatriptan injection, you can take up to 100mg in a 24 hour period, two hours after an injection.
  • Your doctor may perform a heart exam before you start taking sumatriptan or direct you to take your first dose in their office so they can monitor for side effects.
  • If you are taking migraine medications for 10 or more days each month, your headaches may actually become worse due to medication overuse headache.
  • Tell your doctor if you need to use this medication more often of if your headaches worsen.


Make sure to tell your doctor and pharmacist:

  • If you have any drug allergies.
  • Which other prescription and non-prescription medications you currently take.
  • Your medical history especially of blood circulation problems, headaches, heart problems, liver disease, high blood pressure, high cholesterol, diabetes, stroke, seizures or mini-stroke.
  • Your personal or family history of heart disease.
  • If you are breast feeding as small amounts of this medication passes into breast milk.

Also be aware that:

  • Certain conditions can increase your risk of heart problems including a history of high blood pressure, high cholesterol, diabetes, a family history of heart disease, being overweight, smoking or being postmenopausal in women or over 40 in men.
  • This medication may make you dizzy or drowsy. Do not drive, operate machinery or do anything else requiring alertness until it can be done safely.
  • Older adults may be more sensitive to the side effects of this medication especially increased blood pressure or heart problems.
  • This medication should only be taken when clearly needed during pregnancy.

Side effects of Imitrex

Common Imitrex side effects may include but are not limited to:

  • Pain or a tight feeling in your jaw, chest or throat.
  • Pressure or a heavy feeling in any part of the body.
  • Dizziness, drowsiness or weakness.
  • Numbness or tingling.
  • Feeling hot or cold.

Contact your doctor if you experience any of the following side effects of sumatriptan:

  • Signs of a stroke such as slurred speech, problems with vision or balance, sudden severe headache or a sudden numbness or weakness especially on one side of the body.
  • Signs of high levels of serotonin in the body such as agitation, twitching, loss of coordination hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, vomiting or diarrhea.
  • Signs of a heart attack symptoms such as nausea, sweating chest pain or pressure or a pain spreading to your jaw or shoulder.li>
  • Signs of blood circulation problems in your legs or feet such as cramps, a tight or heavy feeling, numbness or tingling, hip pain, muscle weakness, burning pain, cold feeling, or color changes turning pale or blue.
  • Sudden, severe stomach pain and bloody diarrhea.
  • Severe chest pain, shortness of breath or irregular heartbeats.
  • Seizures.
  • Severe headache or a pounding in the neck or ears.
  • Blurred vision.
  • Signs of an allergic reaction such as hives, difficulty breathing or a swelling of your face, lips or throat.


Q: What else is Imitrex called?

A: Imitrex is also known as Imigran. Imigran is not a generic alternative but the same brand name medication with a different name internationally. The generic alternative to Imitrex is known as sumatriptan.

Q: What is the most Imitrex I can take?

A: You should not take more than 200mg within a 24 hour period.

A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.

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