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 selective serotonin (5‑HT1B/1D) receptor agonist presented as a subcutaneous injection for acute migraine treatment in adults.

GNH India supplies Imitrex Sc as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, providing reliable sourcing, regulatory support and consistent product quality for acute migraine care. The company adheres to stringent quality standards, ensures proper cold‑chain handling for the injectable form, and offers flexible logistics to meet the needs of global healthcare providers.

Manufacturer / TM Owner

Glaxosmithkline Pharmaceuticals En Abrege Glaxosmithkline

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Indications & Clinical Uses

Sumatriptan is used for the acute treatment of migraine, a neurovascular headache disorder.

  • Migraine with aura: provides rapid relief of headache and associated symptoms.
  • Migraine without aura: reduces headache intensity and duration.
  • Acute episodic migraine: aborts an ongoing migraine attack and improves functional ability.

How It Works

  • Sumatriptan binds selectively to 5‑HT1B and 5‑HT1D receptors on intracranial blood vessels and sensory nerve terminals. Activation of 5‑HT1B receptors causes cranial vasoconstriction, while 5‑HT1D activation inhibits the release of pro‑inflammatory neuropeptides such as CGRP, thereby terminating the migraine cascade and relieving pain.

Side Effects

Common side effects are generally mild and transient.

Common Side Effects

  • Injection site pain: discomfort at the subcutaneous injection site.
  • Tingling or numbness: transient paresthesia in the face or extremities.
  • Warmth or flushing: sensation of heat spreading from the injection area.
  • Nausea: mild gastrointestinal upset.
  • Dizziness: brief feeling of light‑headedness.
  • Fatigue: temporary tiredness after administration.

Serious or Rare Side Effects

  • Chest discomfort or tightness: may indicate cardiac ischemia.
  • Severe hypertension: sudden rise in blood pressure.
  • Serotonin syndrome: agitation, hyperreflexia, fever when combined with serotonergic agents.
  • Allergic reaction: rash, itching, swelling, or anaphylaxis.
  • Myocardial infarction or stroke: rare but life‑threatening vascular events.
  • Severe abdominal pain: could signal serious gastrointestinal complications.

Precautions & Warnings

Before using Imitrex Sc, consider the following precautions.

  • Cardiovascular disease: avoid use in patients with coronary artery disease, uncontrolled hypertension, or history of myocardial infarction.
  • Cerebrovascular disorders: contraindicated in patients with a history of stroke or transient ischemic attack.
  • Hemiplegic or basilar migraine: not recommended due to increased vascular risk.
  • Concomitant serotonergic drugs: monitor for signs of serotonin syndrome.
  • Pregnancy and lactation: safety not established; use only if the potential benefit outweighs risk.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Avoid Interactions

Sumatriptan may interact with several drug classes; monitor patients accordingly.

Major Interactions (Avoid)

  • MAO inhibitors: risk of severe hypertension and serotonin syndrome.
  • Other triptans: additive vasoconstrictive effects increase cardiovascular risk.
  • Ergot alkaloids: combined vasoconstriction may lead to serious ischemic events.
  • SSRIs, SNRIs, or other serotonergic agents: heightened risk of serotonin syndrome.
  • Monoamine oxidase inhibitors (MAOIs): avoid concurrent use.

Moderate Interactions (Monitor Closely)

  • Antihypertensives: possible additive blood pressure lowering.
  • CYP3A4 inhibitors (e.g., ketoconazole): may increase sumatriptan plasma levels.
  • Oral contraceptives: monitor for increased migraine frequency.
  • Antihistamines: may enhance dizziness or fatigue.
  • Diuretics: watch for electrolyte disturbances that could affect vascular tone.

Frequently Asked Questions

Imitrex Sc contains sumatriptan, a selective serotonin (5‑HT1B/1D) receptor agonist indicated for the acute treatment of migraine attacks in adults. It is administered by subcutaneous injection to rapidly relieve headache and associated migraine symptoms.

Sumatriptan binds to 5‑HT1B receptors on cranial blood vessels, causing vasoconstriction, and to 5‑HT1D receptors on trigeminal nerve endings, inhibiting the release of pro‑inflammatory neuropeptides such as CGRP. This dual action aborts the migraine cascade and reduces pain.

The prescribed dose of Imitrex Sc is determined by a qualified healthcare professional based on the individual patient's condition, severity of migraine, and clinical response. Patients should follow the prescriber’s instructions and not self‑adjust the dose.

Safety of sumatriptan in pregnancy and lactation has not been definitively established. It should only be used if the potential benefit justifies the potential risk to the fetus or infant, and the decision must be made by the prescribing clinician.

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

Imitrex Sc (sumatriptan) belongs to the triptan class, which provides rapid, targeted relief by acting on serotonin receptors. Compared with non‑specific analgesics, triptans address the underlying vascular and neurogenic mechanisms of migraine, often achieving faster and more complete headache resolution.

Imitrex Sc should be stored at 2‑8 °C (refrigerated). Keep the product in its original packaging, protect it from light, and avoid freezing or shaking the vial to maintain drug stability and efficacy.

Imitrex Sc is administered as a single subcutaneous injection, typically into the outer thigh or abdomen. The injection is performed by a qualified healthcare professional or by the patient after proper training on aseptic technique and injection site selection.

Serious risks include chest discomfort or tightness, severe hypertension, myocardial infarction, stroke, and serotonin syndrome, especially when combined with other serotonergic agents. Patients should seek immediate medical attention if they experience any of these symptoms.

Imitrex Sc is contraindicated in patients with known coronary artery disease, uncontrolled hypertension, a history of stroke or transient ischemic attack, hemiplegic or basilar migraine, and in those taking MAO inhibitors or other triptans. Clinicians must evaluate each patient’s medical history before prescribing.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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