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Nasal Medications

Imigran 20 Nasal Spray (SPC): Uses, Dose, Side Effects

Quick summary: Imigran 20 nasal spray is an intranasal sumatriptan medicine used for the acute treatment of migraine attacks. It is designed for fast symptom relief and is not a preventive treatment. This page...

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Medical disclaimer

This content is for educational purposes only and does not replace medical advice, diagnosis or treatment from a qualified healthcare professional.

Quick summary: Imigran 20 nasal spray is an intranasal sumatriptan medicine used for the acute treatment of migraine attacks. It is designed for fast symptom relief and is not a preventive treatment.

This page summarises the SPC-style information in plain English. Always check the official leaflet and follow advice from a doctor or pharmacist.

Medical disclaimer: This article is for general information only and does not replace the official product information, a pharmacist’s advice, or a clinician’s assessment. Do not use this page to diagnose migraine or to decide whether a medicine is suitable for you.

What is Imigran 20 nasal spray?

Imigran 20 nasal spray is a nasal spray formulation containing 20 mg of sumatriptan. It is used for the acute treatment of migraine attacks, including migraine with or without aura.

The spray is intended for use when a migraine attack has already started. It is not described here as a long-term preventive treatment.

How does Imigran nasal spray work?

Imigran nasal spray contains sumatriptan, which acts on serotonin receptors involved in migraine. The original content describes this as helping to constrict dilated blood vessels and reduce the release of inflammatory neuropeptides linked with migraine pain.

Because it is given through the nose, it can be absorbed more quickly than some oral medicines. The original content notes that effects are often felt within about 30 minutes, although response can vary.

How is Imigran 20 nasal spray used?

The original content states that the adult dose is one spray (20 mg) in one nostril at the onset of a migraine. If symptoms persist, a second dose may be taken after at least 2 hours, with a maximum of two doses in 24 hours.

For adolescents aged 12 to 17, the original content mentions a 10 mg dose. Because dosing can depend on the product presentation and official guidance, readers should verify the exact instructions in the leaflet or with a pharmacist.

General use steps

  1. Read the leaflet before use.
  2. Follow the device instructions carefully.
  3. Use the spray at the first sign of a migraine attack, if that is how it has been prescribed or supplied.
  4. Do not exceed the dose instructions in the official product information.

What side effects are mentioned for Imigran nasal spray?

The original content lists the following possible side effects:

  • Chest pain or tightness
  • Nausea or vomiting
  • Dizziness or drowsiness
  • Dry mouth or throat irritation
  • Altered taste sensation

It also notes that more serious reactions can occur and that urgent medical help is needed if severe chest pain, throat tightness, or signs of an allergic reaction develop.

People with a history of cardiovascular conditions are advised in the original content to discuss their medical history with a healthcare professional before use.

How long does Imigran nasal spray take to work?

The original content says Imigran nasal spray typically starts to work within about 30 minutes. Some people may notice relief sooner or later than this.

How quickly it works can depend on factors such as how early it is used during the migraine attack and the severity of symptoms.

What is Imigran nasal spray used for?

Imigran nasal spray is used for the acute treatment of migraine. In the original content, it is described as helping with symptoms such as headache, nausea, and sensitivity to light.

It is not presented as a treatment for other headache types in this article. If the cause of a headache is unclear, a healthcare professional should assess it.

Is Imigran nasal spray discontinued?

The original content states that Imigran nasal spray has not been discontinued. Availability can still vary by country, pharmacy, and supply situation, so readers should check local product information.

What is the price of Imigran 20 nasal spray?

The original content gives a broad estimate of $30 to $50 for a box containing a single spray, but notes that pricing can vary by provider, location, and insurance coverage.

For the most accurate price, readers should check with a local pharmacy or official supplier.

Key points to verify in the official leaflet

If you are comparing products or checking whether this medicine is suitable, the official leaflet or SPC should confirm:

  • The exact strength and device presentation
  • Who the medicine is intended for
  • The correct dose and timing between doses
  • Possible side effects and warning signs
  • Any product-specific instructions for use

Frequently asked questions

▸ How long does Imigran nasal spray take to work?

The original content says it typically starts working within about 30 minutes, although individual response can vary.

▸ What is Imigran nasal spray used for?

It is used for the acute treatment of migraine attacks, including migraine with or without aura.

▸ What side effects are mentioned in the original content?

The original content lists chest pain or tightness, nausea or vomiting, dizziness or drowsiness, dry mouth or throat irritation, and altered taste sensation.

▸ How is the spray used?

The original content says to use one spray in one nostril at the onset of a migraine, with a second dose only if needed after at least 2 hours, and not more than two doses in 24 hours.

▸ Has Imigran nasal spray been discontinued?

The original content says it has not been discontinued, but local availability can vary.

▸ Who should be cautious with this medicine?

The original content advises caution in people with a history of cardiovascular conditions and recommends discussing medical history with a healthcare professional.

Safety reminder: If you have severe chest pain, throat tightness, breathing difficulty, or signs of an allergic reaction after using a medicine, seek urgent medical help. Always follow the official leaflet and speak to a pharmacist or doctor if anything is unclear.

Editorial note Active Ingredients Online Editorial Team This article is prepared as educational medicine information for general readers. It is written to support understanding of active ingredients, medicine uses, possible side effects, precautions and safety-related questions.
Published: April 15, 2025 Updated: May 12, 2026 Educational content

Medical disclaimer

This content is for educational purposes only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. Always ask a doctor, pharmacist or qualified healthcare professional before starting, stopping or changing any medicine.

Sources and verification

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Final note

Medicine information can change and may vary depending on country, product formulation, patient history and professional guidance. Always check official medicine information and ask a healthcare professional for personal medical questions.

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