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If you need urgent assistance, do not use this service. Call 111, or in an emergency call 999.
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Serevent is a twice-daily long-acting inhaler that keeps the airways open for 12 hours, used with a steroid preventer for asthma, or for COPD. For adults already prescribed it.
For adults already prescribed Serevent. In asthma, it must always be used with a steroid preventer inhaler, such as Clenil Modulite. It won’t help in an asthma attack: use your blue reliever, such as Ventolin, and call 999 if it isn’t helping.
Order before 3pm — same-day dispatch (MON - FRI)
~5 min consultation
Secure & confidential · Reviewed by a UK prescriber
Suitable age
18 years and over
Max per order
2 inhalers
Consultation
Yes, for people already prescribed it
Serevent contains salmeterol 25 micrograms per puff, a long-acting bronchodilator (LABA) made by GSK. It relaxes the muscles around the airways and keeps them open for about 12 hours, so it’s taken twice a day, every day, whether or not you have symptoms.
In asthma, Serevent is an add-on for people whose symptoms aren’t controlled by a steroid preventer alone. It must always be used with a daily steroid preventer, never instead of one, because a long-acting bronchodilator on its own can hide worsening inflammation. Many people now use a combination inhaler that contains both. In COPD, it’s used to keep the airways open and ease breathlessness.
Serevent doesn’t work fast enough for sudden symptoms. Always carry your blue reliever inhaler.
We supply Serevent as a repeat for adults already prescribed it. Our preventer inhaler guide explains how preventers, relievers and add-on inhalers fit together.
| Active ingredient | Salmeterol 25 micrograms per puff (as salmeterol xinafoate) |
| Type | Long-acting bronchodilator (LABA), add-on maintenance |
| Form | Pressurised inhaler (Evohaler) |
| Manufacturer | GSK |
| Puffs per inhaler | 120 (about 30 days at 2 puffs twice a day) |
| Legal category | Prescription-only medicine (POM) |
| Used for | Asthma (with a steroid preventer) and COPD |
| Usual dose | 2 puffs twice a day |
| Suitable age | 18 years and over |
Take 2 puffs in the morning and 2 in the evening, every day, even when you feel well. Don’t use it for sudden symptoms: that’s what your blue reliever is for.
Remove the cap and shake the inhaler. If it’s new, or hasn’t been used for a week or more, spray 2 puffs into the air first.
Breathe out gently, seal your lips around the mouthpiece, and press the canister as you start to breathe in slowly and deeply. Hold your breath for about 10 seconds, then breathe out slowly. Wait about 30 seconds before the second puff.
In asthma, keep using your steroid preventer every day as prescribed. Don’t stop or reduce it because you feel better on Serevent.
A spacer can help if you find the timing difficult. You can add an AeroChamber spacer to your order.
Serevent contains salmeterol, a long-acting bronchodilator that keeps the airways open for about 12 hours. In asthma, it’s an add-on to a steroid preventer when the preventer alone isn’t controlling symptoms. In COPD, it’s used to ease breathlessness and keep the airways open, on its own or with other COPD inhalers.
Because using a long-acting bronchodilator on its own in asthma has been linked to severe attacks and asthma deaths. It opens the airways but does nothing for the inflammation underneath, so it can hide worsening asthma. In asthma, Serevent must always be used with a daily steroid preventer, and many people now use a combination inhaler so the two can never be separated.
Salmeterol relaxes the muscle around the airways, like salbutamol does, but it lasts much longer: about 12 hours rather than 4 to 6. It’s slower to start, so it isn’t used for sudden symptoms.
2 puffs twice a day, morning and evening, every day, whether or not you have symptoms. Each inhaler has 120 puffs, which lasts about a month.
No. In an attack, you need a fast-acting reliever such as Ventolin or Salamol. Serevent is too slow to help when you’re acutely unwell, and taking extra doses isn’t safe. If your reliever isn’t helping, call 999.
Yes, if you’re 18 or over and already prescribed Serevent, and, for asthma, you’re using a steroid preventer every day. Complete a short consultation and a UK pharmacist prescriber reviews it. 1 inhaler is £42.99 and 2 are £80.99, including the consultation. Approved before 3pm, Monday to Friday? Dispatched the same day by Royal Mail Tracked 48, Tracked 24 or Special Delivery guaranteed by 1pm next working day.
Headache, tremor, a pounding heartbeat and muscle cramps are the most common. Persistent palpitations or chest discomfort should be checked by a clinician. If your wheeze gets worse straight after a dose, use your reliever and get help.
Don’t stop it on your own. Stopping it can let poorly controlled asthma come back, especially if your asthma was relying on the combination to stay stable. Any change should be planned with your GP or asthma nurse.
The manufacturer advises avoiding it in pregnancy where possible, and it passes into breast milk. But well-controlled asthma matters for you and your baby, so don’t stop any inhaler without advice. Tell us in your consultation and our prescriber will decide whether it’s right to continue, and you should also let your GP or midwife know. Our online service is for adults; children need their own GP or asthma nurse.
Helpful articles and clinical guides related to this treatment category.
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Next-day delivery
Order before 3pm where offered
Discreet packaging
Plain outer packaging
