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Severent is an inhaler and accuhaler that contains the active ingredient, Salmeterol, which is a beta2-selective agonist that is administered by inhalation and is used in the long-term treatment of asthma and for the prevention of bronchospasm in adult patients with reversible obstructive airway disease. Compared to other beta2 agonists, salmeterol has a longer duration of action, allowing twice-daily dosing. However, the appearance of the therapeutic effects is not immediate, which limits its usefulness. Due to the delayed onset of bronchodilator effects, salmeterol should never be used to treat an acute attack.
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Serevent
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PackPrice (£)
Serevent Accuhaler-1 Pack50.00
Serevent Accuhaler-2 Packs94.00
Serevent Evohaler-1 Pack45.00
Serevent Evohaler-2 Packs85.00

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Serevent Inhaler for Long-Term Asthma Control and COPD Treatment

The Serevent inhaler is prescribed for people who need ongoing asthma control or additional breathing support as part of COPD treatment. It contains salmeterol, a long-acting bronchodilator that keeps the airways open for extended periods, helping to reduce day-to-day breathlessness and nighttime symptoms.

Serevent is a long-acting maintenance inhaler, used regularly as part of long-term airway management. It does not treat sudden asthma attacks and must be prescribed alongside an inhaled corticosteroid in asthma, not as a replacement. If approved after an online consultation, you can get the Serevent inhaler from Pharmacy Planet.

What Is the Serevent Inhaler?

The Serevent inhaler is a prescription inhaled medication used to support long-term breathing control in people with chronic asthma and, in selected cases of COPD, as part of long-term bronchodilator therapy. Its active ingredient is salmeterol, a long-acting beta-2 agonist designed to keep the airways relaxed and open for many hours.

Serevent is available in two devices: the Serevent Accuhaler (dry powder, breath-actuated, 50 micrograms per dose) and the Serevent Evohaler (pressurised metered-dose inhaler, 25 micrograms per actuation). Your prescriber will recommend the device that best suits your technique.

How Does Serevent Work?

In asthma and COPD, the muscles around the airways can tighten, making breathing more difficult. Serevent works by targeting this process.

  • Relaxes Airway Muscles — Salmeterol acts on receptors in the lungs that control airway muscle tension.
  • Keeps Airways Open for Up To 12 Hours — This supports easier breathing through the day and night.
  • Reduces Symptoms Over Time — Regular use lowers wheezing, chest tightness, and shortness of breath.

Serevent usually begins working within 10–20 minutes, but is not suitable for rapid symptom relief. It must never be used on its own for asthma, as it does not treat airway inflammation.

How to Use the Serevent Inhaler

Always use the Serevent inhaler exactly as prescribed. It should be taken regularly, even when breathing feels stable.

Dosage Guidance:

  • Asthma – Adults and adolescents (12+): Accuhaler: 1 inhalation twice daily. Evohaler: 2 puffs twice daily.
  • Asthma – Children (4–11): Accuhaler: 1 inhalation twice daily. Evohaler: 2 puffs twice daily.
  • COPD (Adults only): Accuhaler: 1 inhalation twice daily. Evohaler: 2 puffs twice daily.
  • Not recommended for children under 4 years.

How to Use Serevent Accuhaler:

  1. Open the Accuhaler by sliding the thumb grip until it clicks.
  2. Hold the inhaler flat and slide the lever until it clicks to load a dose.
  3. Breathe out gently, away from the inhaler.
  4. Seal your lips around the mouthpiece and breathe in steadily and deeply.
  5. Remove and hold your breath for about 10 seconds, then breathe out slowly.
  6. Close the inhaler by sliding the thumb grip back.

How to Use Serevent Evohaler:

  1. Remove the mouthpiece cap and shake the inhaler well.
  2. Breathe out as far as comfortable.
  3. Place the mouthpiece between your lips and breathe in slowly while pressing the canister once.
  4. Continue breathing in steadily, then hold your breath for about 10 seconds.
  5. Breathe out gently and replace the mouthpiece cover.

Who Can Use the Serevent Inhaler?

Serevent inhalers may be suitable for people who:

  • Have asthma that needs long-term bronchodilator support.
  • Experience nighttime symptoms or exercise-related breathlessness.
  • Use an inhaled corticosteroid but still have breathing symptoms.
  • Need additional airway support as part of COPD management.

Serevent inhalers may not be suitable for people who:

  • Need fast relief during sudden asthma attacks.
  • Are allergic to salmeterol.
  • Have a severe milk protein allergy (Serevent Accuhaler only).
  • Have certain heart conditions without medical review.

A UK prescriber will assess suitability during your online consultation at Pharmacy Planet.

Possible Side Effects of Serevent Inhaler

Many people use the Serevent inhaler without significant problems, but side effects can occur.

Common Side Effects:

  • Headache
  • Throat irritation
  • Muscle cramps
  • Nausea or upset stomach
  • Difficulty sleeping in some people

Serious Side Effects:

  • Fast or irregular heartbeat
  • Chest pain
  • Feeling faint or dizzy
  • Sudden worsening of breathing

Seek medical advice promptly if serious side effects occur.

Why Do People Choose Serevent Inhalers?

The Serevent inhaler is often chosen because it provides long-lasting airway relaxation. Common reasons include:

  • Reduces nighttime and exercise-related symptoms.
  • Supports stable breathing as part of long-term therapy.
  • Works alongside inhaled corticosteroids for better asthma control.
  • Fits into structured respiratory treatment plans.

For many people, the Serevent inhaler supports better breathing consistency rather than short-term symptom relief.

Consultation and Order Process at Pharmacy Planet

Ordering a Serevent inhaler from Pharmacy Planet is straightforward:

  1. Complete the online consultation and share details about your asthma or COPD and medical history.
  2. A UK-registered prescriber reviews your answers.
  3. If approved, your Serevent inhaler is delivered discreetly to your address.
Serevent Inhaler

The Serevent inhaler is prescribed for people who need ongoing asthma control or additional breathing support as part of COPD treatment. It contains salmeterol, a long-acting bronchodilator that keeps the airways open for extended periods.

Serevent is a maintenance inhaler — not for sudden attacks — and must be used alongside an inhaled corticosteroid in asthma. If approved after an online consultation, you can get the Serevent inhaler from Pharmacy Planet.

The Serevent inhaler contains salmeterol, a long-acting beta-2 agonist. It is available as the Serevent Accuhaler (dry powder, breath-actuated, 50 mcg per dose) and the Serevent Evohaler (pressurised spray, 25 mcg per actuation). Your prescriber recommends the device that best suits your technique.

Serevent works by targeting the muscles around the airways that can tighten in asthma and COPD.

  • Relaxes Airway Muscles — Salmeterol acts on receptors that control airway muscle tension.
  • Keeps Airways Open for Up To 12 Hours — Supports easier breathing day and night.
  • Reduces Symptoms Over Time — Regular use lowers wheezing, chest tightness, and shortness of breath.

Usual dose: twice daily for both devices. Not recommended for children under 4.

Accuhaler Steps:

  1. Slide thumb grip to open, slide lever to load dose.
  2. Breathe out gently, seal lips, breathe in steadily and deeply.
  3. Hold breath 10 seconds, breathe out, close inhaler.

Evohaler Steps:

  1. Shake well, breathe out gently.
  2. Seal lips, breathe in slowly and press canister once.
  3. Hold breath 10 seconds, breathe out, replace cap.

Serevent may be suitable for people who:

  • Have asthma needing long-term bronchodilator support.
  • Experience nighttime symptoms or exercise-related breathlessness.
  • Use a steroid preventer but still have symptoms.
  • Need additional airway support for COPD.

Serevent may not be suitable for people who:

  • Need fast relief during sudden asthma attacks.
  • Are allergic to salmeterol.
  • Have a severe milk protein allergy (Accuhaler only).
  • Have certain heart conditions without medical review.

Many people use the Serevent inhaler without significant problems, but side effects can occur.

Common Side Effects:

  • Headache
  • Throat irritation
  • Muscle cramps
  • Nausea or upset stomach
  • Difficulty sleeping

Serious Side Effects:

  • Fast or irregular heartbeat
  • Chest pain
  • Feeling faint or dizzy
  • Sudden worsening of breathing

Seek medical advice promptly if serious side effects occur.

The Serevent inhaler is often chosen for long-lasting airway relaxation. Common reasons include:

  • Reduces nighttime and exercise-related symptoms.
  • Supports stable breathing as part of long-term therapy.
  • Works alongside inhaled corticosteroids for better asthma control.
  • Fits into structured respiratory treatment plans.

Ordering a Serevent inhaler from Pharmacy Planet is straightforward:

  1. Complete the online consultation and share details about your asthma or COPD.
  2. A UK-registered prescriber reviews your answers.
  3. If approved, your Serevent inhaler is delivered discreetly to your address.
Frequently Asked Questions

Serevent is a maintenance inhaler. It is used every day to keep the airways open over time. It does not work fast enough to treat sudden asthma attacks.

The Serevent inhaler relaxes the airway muscles but does not reduce inflammation. A steroid inhaler is needed alongside it to control swelling in the airways and manage asthma safely.

The Serevent inhaler works for up to 12 hours. This is why it is usually taken twice a day, morning and evening, to maintain steady breathing.

Yes. The Serevent inhaler is often prescribed when symptoms occur at night or during exercise, as it keeps the airways relaxed for long periods.

Both contain the same medicine. Accuhaler is a dry powder inhaler that works when you breathe in, while Evohaler is a spray inhaler that releases medicine when pressed.

No. Serevent inhalers should not be used on their own for asthma. It must be taken with an inhaled corticosteroid to control airway inflammation properly.

If your breathing worsens or you need your reliever inhaler more often, contact your prescriber. This may mean your asthma or COPD treatment needs adjusting.

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Review By

HARMINDER ‘HARMY’ KAUR

Last Updated On : Mar 13 2026

BSc(hons) Pharmacy

GPhC Number: 2061107

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GURDEV SEHMI

Last Reviewed On : Mar 23 2026

BSc Pharm, MRPharmS, Independent Prescriber, Superintendent Pharmacist, Clinical Lead

GPhC Number: 2050925