Imitrex (Sumatriptan)

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Imitrex 2 Nasal-Spray per Pack

Manufacturer: GSK

Country: Canada

Dosage: 5 mg

Qty-Price (USD):

Type:

Product: Imitrex 2 x 0.5ml STAT DOSE Cartridges

Manufacturer: GSK

Country: Canada

Dosage: 6 mg/0.5 ml

Qty-Price (USD):

Type:

Product: Imitrex STAT DOSE Starter Kit (with 2 x 0.5ml Cartridges)

Manufacturer: GSK

Country: Canada

Dosage: 6 mg/0.5 ml

Qty-Price (USD):

Type:

Product: Imitrex 2 Nasal-Spray per Pack

Manufacturer: GSK

Country: Canada

Dosage: 20 mg

Qty-Price (USD):

Type:

Product: Imitrex (ON BACKORDER)

Manufacturer: GSK

Country: Canada

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Imitrex

Manufacturer: GSK

Country: Canada

Dosage: 100 mg

Qty-Price (USD):

Type:

Product: Imitrex

Manufacturer: GSK

Country: Turkey

Dosage: 100 mg

Qty-Price (USD):

Type:

Product: Imitrex

Manufacturer: Aspen

Country: Australia

Dosage: 100 mg

Qty-Price (USD):

Generic Equivalent of Imitrex

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Sumatriptan 2 x 0.5ml Injections

Manufacturer: Generic

Country: Canada

Dosage: 6 mg/0.5 ml

Qty-Price (USD):

Type:

Product: Sumatriptan

Manufacturer: Generic

Country: Canada

Dosage: 25 mg

Qty-Price (USD):

Type:

Product: Sumatriptan

Manufacturer: Generic

Country: Canada

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Sumatriptan

Manufacturer: Generic

Country: United Kingdom

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Sumatriptan

Manufacturer: Generic

Country: United Kingdom

Dosage: 100 mg

Qty-Price (USD):

Type:

Product: Sumatriptan (Expiry Note)

Manufacturer: Generic

Country: Canada

Dosage: 100 mg

Qty-Price (USD):

Imitrex Information

medically reviewed by Dr. HaVy Ngo, Pharmacist on July 8, 2025.

Imitrex and Sumatriptan at CanadaPharmacyOnline.com

Imitrex, a brand manufactured by GSK, is available in many countries worldwide, including Canada and Turkey. Imitrex is also available in Australia, known as Imigran, manufactured and marketed by Aspen.

Generic sumatriptan is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Sumatriptan:

Generic sumatriptan contains the same active ingredient as the brand-name Imitrex and is required to meet the same safety, effectiveness, and quality standards as the brand-name product. This means it is designed to work in the same way as Imitrex. Studies have demonstrated bioequivalence between generic and brand-name sumatriptan, meaning they have comparable absorption rates and overall effects. However, individual responses to any medication can vary. If you have any questions about using generic sumatriptan, talk to your doctor or pharmacist.

For more information about generic drug approval and bioequivalence, you can visit the FDA website: https://www.fda.gov/drugs/buying-using-medicine-safely/generic-drugs

Dosage:

Imitrex is available in different forms and strengths:
• 5 mg and 20 mg nasal spray
• 6 mg injection in 0.5 ml cartridges
• 50 mg and 100 mg oral tablets

Sumatriptan is also available in different forms and strengths:
• 6 mg injection in 0.5 ml vials
• 25 mg, 50 mg, and 100 mg oral tablets

Your doctor will determine the appropriate dosage based on the individual needs and medical conditions.

Usage:

Imitrex (sumatriptan) is a prescription medication used to treat acute migraine attacks with or without aura in adults. A migraine is a severe headache, often characterized by throbbing or pulsating pain. You may usually feel this pain on one side of your head. A migraine with aura is a recurring headache that occurs after or at the same time as a sensory disturbance. These may include flashes of light, changes in vision, or tingling in the hand or face. The injectable form of Imitrex also treats cluster headaches in adults. Imitrex will only treat headaches. It does not prevent headaches or reduce the number of attacks.

Mechanism of Action:
Imitrex (sumatriptan) is a selective serotonin receptor agonist. It narrows the blood vessels in the head, stopping pain signals from being sent to the brain and blocking the release of certain natural substances that can cause migraine symptoms such as pain and nausea.

Use Imitrex exactly as your doctor prescribes, following the instructions in the product monograph | GSK. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before using Imitrex, it is essential to discuss all potential side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below is a partial list of side effects; individual reactions can vary. Before starting Imitrex, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common side effects – These are examples of some common side effects of Imitrex, but others are possible. Contact your doctor promptly if any side effects persist, worsen, or concern you, or if you experience any other concerning symptoms.
• Dizziness
• Drowsiness
• Nausea
• Warm, hot, burning, or cold feeling
• Muscle weakness

Serious or rare side effects – Stop using Imitrex and seek immediate medical attention right away if you experience any of the following:
• Allergic reactions, including angioedema, hives, and trouble breathing
• Increase in blood pressure
• Seizure
• Signs of a heart attack, including chest pain, pain spreading to your jaw or shoulder, nausea, and sweating
• Signs of stroke, including sudden severe headache, slurred speech, vision problems, balance problems, sudden numbness or weakness

Contraindications:

This is not an exhaustive list of contraindications. It is crucial to discuss all your medical conditions, past and present, and all medications you are using with your doctor or pharmacist before starting Imitrex.

Imitrex should not be used if:
• You are allergic to sumatriptan or any of the inactive ingredients in Imitrex
• You are taking or have taken a monoamine oxidase inhibitor (MAOI) within the past 2 weeks
• You have a history of heart attack, stroke, or transient ischemic attack (TIA)
• You have severe liver problems

Tell your doctor about all of your medical conditions, past and present, before starting Imitrex. This is crucial because certain conditions can affect whether Imitrex is right for you. These conditions may include, but are not limited to:
• Angina, coronary artery disease, or other heart problems
• Blood circulation problems
• Diabetes
• Epilepsy
• Headaches that seem different from your usual migraine headaches
• High blood pressure (even if controlled)
• High cholesterol
• Kidney problems
• Liver disease
• Obesity
• Wolff-Parkinson-White syndrome

Cardiovascular Events:
Imitrex can cause serious cardiovascular problems like heart attack, stroke, and arrhythmias. This is most likely to happen in people who have underlying cardiovascular disease. Your doctor will carry out tests to assess your risk factors before prescribing Imitrex.

Continuous Use:
Overuse of migraine medication can make your migraine headaches worse, leading to medication overuse headaches (MOH) or rebound headaches. Inform your doctor if your headaches become frequent or worsen.

Dizziness:
Imitrex can cause dizziness and drowsiness, which may impair your ability to react. Do not drive or operate machinery until you know how this medicine affects you.

Drug Interactions:

Before using Imitrex, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete information about potential drug interactions, consult the product monograph in Canada and discuss any concerns with your healthcare provider.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. Imitrex can interact with other medicines, but is not limited to cimetidine, oral contraceptives, citalopram, fluoxetine, eletriptan, or ergotamine. Do not use Imitrex if you have used an MAO inhibitor, such as isocarboxazid, selegiline, or methylene blue injection, in the past 14 days. Do not use Imitrex within 24 hours before or after using any other migraine headache medicine.

Pregnancy and Breastfeeding:

If you are pregnant or become pregnant, tell your doctor before using Imitrex. It is unknown if sumatriptan will harm an unborn baby. It is crucial to discuss the risks and benefits of using Imitrex with your doctor before using it. If you are breastfeeding or plan to breastfeed, inform your doctor. Sumatriptan is excreted in human breast milk. Avoid breastfeeding for 12 hours after taking Imitrex. It is crucial to discuss the risks and benefits of using Imitrex with your doctor before taking it.

Frequently Asked Questions about Imitrex at Canada Pharmacy Online

Why is Imitrex more affordable in Canada than in the United States?

Prescription drug prices, including Imitrex, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to offering you the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784. For additional information or to learn about the ordering process, please visit our How to Order page.

Is there a limit on how many Imitrex I am allowed to order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Imitrex at one time, as per your doctor's prescription.

Can I buy Imitrex over the counter from you?

No, Imitrex requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes between 7 and 18 business days to receive your order from our pharmacy.

What is the difference between Imitrex 50 mg and 100 mg?

The difference in dosage represents the amount of active ingredient(s) present in the drug.

How should I take Imitrex?

Imitrex is available as tablets, nasal sprays, and injectable solutions. Your doctor will prescribe the appropriate form and dosage for you. Follow your doctor's instructions exactly, and do not exceed the recommended dose. Swallow Imitrex tablets whole with a glass of water. Do not crush, break, or chew the medication. Imitrex nasal spray is ready to use. Apply one spray in one nostril. Imitrex injection is a single-use medication that should be administered subcutaneously, just below the skin, on the outer aspect of the thigh or upper arm.

When should I take Imitrex?

Take Imitrex as soon as migraine or cluster headache symptoms appear. It is not for prevention and should not be used if you do not have symptoms.

What if my headache returns or doesn't go away?

If your headache returns after initial relief, you can take a second dose after at least 2 hours (for tablets) or as advised by your doctor. Do not exceed the maximum daily dose. If there is no improvement after the first dose, do not take a second dose without consulting your doctor.

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Latest News:

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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