Shapes, strengths, use, etc.

Imitrex (sumatriptan) is a brand name prescription medicine. The Food and Drug Administration (FDA) approved it to treat migraine with or without aura. Imitrex is available as an injection, tablet, and nasal spray. Injection forms are also approved for treating cluster headaches.

It is important to note that Imitrex is not approved to help prevent migraines or cluster headaches.

The active medicine in Imitrex is sumatriptan. And Imitrex is available as a generic drug sumatriptan. Imitrex belongs to a class of medicines called serotonin agonists (triptans).

For more information on Imitrex dosages, including its forms, strengths, and how to use the medicine, keep reading. For a complete overview of Imitrex, check out this article.

This article describes the typical dosages of Imitrex supplied by the manufacturer of the drug. When using Imitrex always follow the dosage prescribed by your doctor.

Imitrex is available in several different forms and strengths, which are described below. The form and strength prescribed by your doctor will determine the dose of Imitrex you use.

Imitrex shapes

Imitrex comes in these forms:

  • liquid solution administered by subcutaneous injection with either:
    • STATdose pen and pre-filled cartridge
    • single-dose vial for use with a syringe
  • oral tablets
  • nasal spray

Imitrex strengths

The forms of Imitrex are available in the strengths listed below. Milligrams and milliliters are abbreviated as mg and ml.

Typical dosages

Usually your doctor will start giving you a low dose. Then they’ll adjust it over time to reach the amount that’s right for you. Your doctor will ultimately prescribe the smallest dose that provides the desired effect.

The following information describes the strengths commonly used or recommended. However, be sure to take the dosage prescribed by your doctor. Your doctor will determine the best dose for you.

Dosage for migraine

The dosage of Imitrex for migraine with or without aura depends on the form of Imitrex prescribed by your doctor.

Dosage of oral tablets

To treat migraine, Imitrex oral tablets (pills) can be given at a dose of 25 mg, 50 mg or 100 mg. You should take your dose when you first experience symptoms of a migraine, but you can take a dose anytime during the migraine.

If the first dose does not completely relieve your migraine episode, you may take a second dose. But you should wait at least 2 hours after your first dose before taking another dose.

Dosage of nasal spray

To treat migraine, Imitrex nasal spray may be prescribed in doses of 5 mg, 10 mg, or 20 mg. The 5 mg and 20 mg doses require a single spray into one nostril. The 10 mg dose requires a spray of the 5 mg dose into each nostril.

If the first dose does not completely relieve your migraine episode, you may take a second dose. But you should wait at least 2 hours after your first dose before taking another dose.

STATdose pen and vial dosage

To treat migraine, the recommended starting dose with the STATdose pen or vial is a single 6 mg dose. If the side effects of this strength are bothersome, your doctor may prescribe a lower dose of 1 mg to 5 mg. (To learn more about the side effects of Imitrex, check out this article.)

The STATdose pen uses pre-filled single-dose cartridges, so it can only deliver 4 mg or 6 mg doses. For other prescribed doses, you should use the single-dose vial.

If the first dose does not completely relieve your migraine episode, you may take a second dose. But you should wait at least 2 hours after your first dose before taking another dose.

Dosage for cluster headaches

Only injection forms of Imitrex are approved for treating cluster headaches. These forms are the pen and the STATdose vial. You can find the dosages below.

STATdose pen and vial dosage

To treat cluster headache, the recommended dose with the STATdose pen or vial is 6 mg.

If the first dose does not completely relieve your cluster headache, you may take a second dose. But you should wait at least 2 hours after your first dose before taking another dose.

Maximum dosage

The maximum dose of Imitrex per day depends on what form of Imitrex you are using:

  • oral tablet: 200 mg over 24 hours
  • nasal spray: 40 mg over 24 hours
  • STATdose pen or vial: 12 mg over 24 hours

Long term use

Imitrex is intended for use as a long-term treatment. If you and your doctor determine that Imitrex is safe and effective for you, you will probably use it for the long term.

Below are answers to some frequently asked questions about Imitrex dosages.

What is the maximum dose of Imitrex per month?

It is not known whether it is safe to use Imitrex to treat more than four headaches per month (30 days). Your doctor can give you more information about how to use Imitrex safely to treat migraine or cluster headache.

If you would like to learn more about the maximum daily doses of Imitrex, see “Maximum dose” in the “Dose of Imitrex” section above.

Why don’t the pill or nasal spray forms of Imitrex treat cluster headaches?

The pill and nasal spray forms of Imitrex have not been shown to be safe and effective in treating cluster headaches. This is why these forms are not approved to treat the disease.

Only the injection forms of Imitrex have been shown, through clinical studies, to be safe and effective for the treatment of cluster headaches.

Talk to your doctor if you want to learn more about Imitrex or other treatments for cluster headache.

Find the dosing instructions for how to use each form of Imitrex below.

Dosage instructions for oral tablets

You will take Imitrex oral tablets by mouth. When you notice symptoms of migraine, you swallow a tablet whole with water or other liquid.

Dosage instructions for nasal spray

For Imitrex nasal spray, you will insert the unit (disposable device) into one nostril and spray once. To view step-by-step instructions for using Imitrex nasal spray, see the instructions for using the medication.

Dosage instructions for the STATdose pen or vial

The instructions for using the pen and the STATdose vial differ slightly. Your doctor or other healthcare professional can show you how to use either form correctly.

To use the STATdose pen, you must charge the device with a cartridge. You then give yourself a dose by subcutaneous injection. Your doctor will tell you where on your body to inject your doses. Make sure to hold the pen against your skin for at least 5 seconds when injecting a dose. To view detailed instructions for using the pen, refer to the instructions for use of the medicine.

To use the single-dose vial, you will use a syringe and needle to withdraw your dose from the vial. Your doctor or healthcare professional will give you instructions on how much Imitrex to use. They will also tell you where on your body to inject the doses.

The dose of Imitrex prescribed by your doctor will depend on several factors. These include:

  • the type and severity of the disease for which you are using Imitrex
  • what form of Imitrex you are using
  • side effects * you experience while using Imitrex

Other medical conditions you have may also affect your dose of Imitrex.

* To learn more about the side effects of Imitrex, see this article.

Dosage adjustments

If your doctor prescribes Imitrex oral tablets for you and you have liver problems, your dose may be adjusted. You can speak with your doctor to find out more.

Also, if you are 65 years of age or older, you may be given a lower starting dose of Imitrex than usual. This is how your doctor can see how the medicine is affecting you. Elderly people may have an increased risk of side effects from Imitrex. Your doctor can give you more information.

Imitrex is not a medicine that you take every day. Since you only use the medicine as needed when you have a cluster headache or migraine, you cannot miss a dose.

It is best to take a dose of Imitrex as soon as your symptoms start. But you can take a dose anytime you have a migraine or cluster headache.

It is important that you do not use more Imitrex than your doctor tells you to. For some medications, taking more than the recommended amount may cause side effects or overdose.

If you take more than the recommended amount of Imitrex

Call your doctor at once if you think you have taken too much Imitrex. Another option is to call the American Association of Poison Control Centers at 800-222-1222 or use their online tool. If you have severe symptoms, immediately call 911 or your local emergency number, or go to the nearest emergency room.

The dosages in this article are typical dosages provided by the manufacturer of the drug. If your doctor recommends Imitrex, they will prescribe the dosage that is right for you. Always take the dosage prescribed by your doctor.

As with any medicine, never change your dose of Imitrex without your doctor’s advice. If you have any questions about how much Imitrex is right for you, talk to your doctor.

In addition to learning more about the dosage, you may want other information about Imitrex. You may find these additional articles helpful:

Disclaimer: Medical News Today has done everything possible to ensure that all information is accurate, complete and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare practitioner. You should always consult your doctor or other healthcare professional before taking any medicine. The drug information contained herein is subject to change and is not intended to cover all uses, directions, precautions, warnings, drug interactions, allergic reactions, or possible side effects. The absence of warnings or other information for a particular drug does not indicate that the drug or drug combination is safe, effective or appropriate for all patients or all specific uses.


Source link

Comments are closed.