Product image of Imitrex Sc (Sumatriptan) supplied by GNH India

Imitrex Sc

Active Ingredient:
Sumatriptan
Origin:
EU

Imitrex Sc (Sumatriptan)

Sumatriptan, the active ingredient in Imitrex Sc, is a Triptan (selective 5‑HT1B/1D receptor agonist) presented as a subcutaneous injection for subcutaneous use. It is indicated for the acute treatment of migraine attacks in adult patients, providing rapid relief of headache and associated symptoms.

GNH India supplies Imitrex Sc as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, ensuring consistent quality and regulatory compliance across global markets and providing reliable logistics for timely delivery.

Manufacturer / TM Owner

Glaxosmithkline Pharmaceuticals En Abrege Glaxosmithkline

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Indications & Clinical Uses

Imitrex Sc (sumatriptan) is used in the migraine pathway to treat acute headache episodes.

  • Migraine: provides rapid relief of moderate to severe migraine attacks in adults.
  • Cluster headache: offers acute treatment of cluster headache episodes when other therapies are insufficient.
  • Migraine with aura: alleviates headache and associated aura symptoms during an acute attack.

How It Works

  • Sumatriptan acts as an agonist at serotonin 5‑HT1B and 5‑HT1D receptors located on intracranial blood vessels and trigeminal nerve endings. Activation of these receptors induces cranial vasoconstriction and inhibits the release of pro‑inflammatory neuropeptides, thereby reducing neurogenic inflammation and interrupting pain transmission associated with migraine attacks.

Side Effects

Common Side Effects

  • Injection site pain: mild to moderate discomfort at the injection site.
  • Tingling or paresthesia: transient sensations of pins and needles.
  • Warmth or flushing: sensation of heat spreading from the injection area.
  • Nausea: occasional upset stomach.
  • Dizziness: light‑headed feeling.
  • Fatigue: feeling unusually tired.

Serious or Rare Side Effects

  • Chest pain or tightness: may indicate coronary vasospasm.
  • Severe hypertension: abrupt increase in blood pressure.
  • Serotonin syndrome: agitation, hyperthermia, tremor when combined with other serotonergic agents.
  • Allergic reactions: rash, swelling, anaphylaxis.
  • Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
  • Cardiac arrhythmias: irregular heart rhythm.

Precautions & Warnings

Before using Imitrex Sc, consider the following precautions:

  • Cardiovascular assessment: avoid in patients with ischemic heart disease, uncontrolled hypertension, or significant arrhythmias.
  • Migraine subtype review: use with caution in hemiplegic or basilar migraine.
  • Concomitant serotonergic drugs: evaluate risk of serotonin syndrome when combined with SSRIs, SNRIs, or MAO inhibitors.
  • Hypersensitivity check: do not use if the patient has known allergy to sumatriptan or any excipients.
  • Pregnancy and lactation: safety not established; weigh benefits against potential risks.
  • Store at ambient temperature: keep in the original package, protect from moisture and light.

Avoid Interactions

Sumatriptan may interact with several drug classes. Review patient medication history before prescribing.

Major Interactions (Avoid)

  • MAO inhibitors: increased risk of serotonin syndrome.
  • Other triptans: additive vasoconstrictive effect.
  • Ergotamine derivatives: heightened vasospasm risk.

Moderate Interactions (Monitor Closely)

  • SSRIs/SNRIs: monitor for signs of serotonin syndrome.
  • Beta‑blockers: may raise sumatriptan plasma concentrations.
  • CYP3A4 inhibitors (e.g., ketoconazole): may increase exposure and side‑effect potential.

Frequently Asked Questions

Imitrex Sc contains sumatriptan and is used for the acute treatment of migraine attacks in adults. It is administered by subcutaneous injection to provide rapid relief of headache pain and associated migraine symptoms such as nausea, photophobia, and phonophobia.

Sumatriptan works by stimulating serotonin 5‑HT1B and 5‑HT1D receptors on cranial blood vessels and trigeminal nerve endings. This causes vasoconstriction of dilated intracranial vessels and blocks the release of inflammatory neuropeptides, thereby reducing pain signaling and migraine symptoms.

The prescribed dose of Imitrex Sc is determined by the treating physician based on the individual patient's clinical condition, severity of the migraine attack, and prior response to therapy. The healthcare professional will decide the appropriate amount and timing of each injection.

The safety of sumatriptan in pregnancy and lactation has not been definitively established. Healthcare providers should weigh the potential benefits against possible risks and consider alternative treatments when treating pregnant or nursing patients.

To place an order, submit an enquiry on the product page at gnhindia.com specifying the required quantity of Imitrex Sc. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including cold‑chain handling if needed) and required import documentation.

Imitrex Sc is a rapid‑acting injectable triptan, offering faster onset of relief compared with oral triptans, which must be absorbed through the gastrointestinal tract. It is particularly useful for patients who experience nausea or vomiting during migraine attacks or who need quick symptom control.

Imitrex Sc should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the product from moisture and direct light. Do not freeze. Check the label for the expiration date before use.

Imitrex Sc is given as a subcutaneous injection, typically into the outer thigh or abdomen. The injection is performed by a trained healthcare professional or by the patient after proper instruction. The device is a pre‑filled, single‑use syringe designed for easy administration.

Serious risks include coronary vasospasm leading to chest pain or myocardial ischemia, severe hypertension, serotonin syndrome when combined with other serotonergic agents, and rare allergic reactions such as anaphylaxis. Patients should seek immediate medical attention if they experience chest discomfort, severe hypertension, or signs of an allergic reaction.

Imitrex Sc is contraindicated in patients with known hypersensitivity to sumatriptan, those with uncontrolled hypertension, ischemic heart disease, severe coronary artery disease, or a history of stroke. It should also be avoided in patients who have taken ergotamine-containing medications within the previous 24 hours.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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