What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Imitrex Autoinjector Refill Cartridges


Imitrex Autoinjector Refill Cartridges

Prescription Required

4mg / 0.5ml x
6mg / 0.5ml cartridge syringes plus 1 autoinjector

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

Generic Equivalent - Imitrex Autoinjector Refill Cartridges

Prescription Required

6mg/0.5ml x

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

  • Product Details


    The Imitrex autoinjector is a medical device designed to efficiently and precisely administer sumatriptan, a serotonin receptor agonist. Sumatriptan is utilized in the treatment of acute migraine attacks and cluster headaches. 

    The autoinjector expedites drug delivery by providing an easy mechanism to inject the medication subcutaneously, promoting rapid relief from debilitating headache symptoms. 

    Imitrex alleviates pain, sensitivity to light and sound, and associated symptoms often accompanying migraines by targeting specific serotonin receptors and constricting blood vessels in the brain. It is a valuable tool in improving the quality of life for individuals afflicted by these severe neurological conditions.


    Take 1-6 mg at the onset of migraine or cluster headache. Do not take more than 12 mg in one day.


    The active ingredient in Imitrex Autoinjector Refill cartridges is sumatriptan.


    The most common drug-drug interactions.

    • Almotriptan 
    • Bromocriptine
    • Buspirone
    • Droxidopa
    • Eletriptan
    • Ergotamine Dihydroergotamine
    • Frovatriptan 
    • Isocarboxazid (Marplan)
    • Lithium
    • Lorcaserin
    • Moclobemide (Aurorix, Manerix)
    • Monoamine Oxidase Inhibitors
    • Naratriptan 
    • Phenelzine (Nardil)
    • Rizatriptan 
    • Selective serotonin reuptake inhibitors (SSRIs)
    • Selegiline (Emsam)
    • Serotonin-norepinephrine reuptake inhibitors (SNRIs)
    • St. John's Wort (Hypericum Perforatum)
    • Sumatriptan 
    • Tramadol
    • Tranylcypromine (Parnate)
    • Tryptophan
    • Zolmitriptan


    Tell your doctor if you have a history of heart disease, stroke, or other cardiovascular disease.

    Overusing Imitrex can increase the severity and frequency of migraines.

    Side Effects

    Common side effects of this drug include.

    • Asthenia
    • Bleeding at the injection site
    • Bronchospasm
    • Bruising at the injection site
    • Burning sensation
    • Burning sensation at the injection site
    • Chest discomfort
    • Chest pressure
    • Chest tightness
    • Diaphoresis
    • Dizziness
    • Drowsiness
    • Erythema at the injection site
    • Feeling hot
    • Feeling of heaviness
    • Flushing
    • Headache
    • Local discomfort (jaw or throat)
    • Myalgia
    • Nasal discomfort (nasal cavity)
    • Nausea and vomiting
    • Neck pain
    • Neck stiffness
    • Numbness
    • Pain at the injection site
    • Paresthesia
    • Sedated state
    • Sensation of pressure
    • Sensation of tightness
    • Sinus discomfort
    • Strange feeling
    • Swelling at the injection site
    • Tight feeling in the head
    • Tingling sensation
    • Vertigo
    • Warm sensation at the injection site


    1. Imitrex Injection [package insert]. Research Park Triangle, NJ: GSK; 2015.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 1952

  • Product Reviews


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