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Asthma

Montelukast

Montelukast is a prescription medication used in the treatment of asthma. It is a medicine in tablet form which helps to prevent and reduce the symptoms of asthma such as difficulty breathing because of narrowed and inflamed airways. This medicine can also help reduce the symptoms of allergies such as allergic rhinitis.

Asthma is a common respiratory condition that can be fatal for some if the symptoms are not managed. Symptoms can include difficulty breathing, wheezing, coughing, and tightness in the chest. Medication is needed to prevent and relieve these symptoms and montelukast is a preventer medicine that is used alongside other preventer and reliever medicines to manage this condition.

Last Patient Information Leaflet Review Date: 20/01/2020

See Montelukast Patient Information Leaflet

This medicine is not available to request via our online service. The only treatments that we can prescribe for asthma are Ventolin, Airomir, Bricanyl, Salamol, and the Salamol Easi-breathe Inhaler. If you are still having trouble with your symptoms please visit the NHS website for services in your area.


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Dr. Diana Gall GMC No. 7685129

Dr Diana Gall graduated from medical school in 2005 and has since undertaken further intensive training in many different areas of medicine. Dr Diana has reached consultant level and has practiced medicine all over Europe.

Shamir Patel GPHC No. 2049338

Shamir is a well-respected pharmacist with extensive experience running online pharmacies in the UK.

How does Montelukast work?

Montelukast is a leukotriene receptor antagonist which is a treatment that is used in conjunction with other treatment methods such as an inhaler. If an inhaler alone is not helping your symptoms, leukotriene receptor antagonists are prescribed.

Leukotrienes are chemicals found naturally in the body which produce an inflammatory response to allergens by narrowing the airways and causing inflammation in the lungs. This causes symptoms of asthma, particularly when the body is exposed to a trigger such as pollen or dust, or exercise.

Montelukast works by blocking these leukotriene chemicals in the lungs to stop the airways narrowing, infamming, and producing excess mucus which all make breathing very difficult.

Who is suitable to take montelukast?

Montelukast is suitable for adults and adolescents over the age of 15 who suffer from symptoms of asthma. This medicine becomes suitable when other asthma treatments are not effectively controlling these symptoms. If you’re currently using a preventer inhaler but your symptoms are still persisting and you’re needing to use your reliever inhaler often, then montelukast is a suitable medicine to be added on to your treatment plan.

This medicine is also suitable for asthma sufferers whose only trigger is exercise. Some people do not experience asthma symptoms until they’re being active, and montelukast has proven to reduce sensitivity of the airways, improve the function of the lungs which makes breathing easier and be active.

Who is not suitable to take montelukast?

There are many factors that might make you unsuitable to take montelukast. Some medications or existing health conditions might mean that you’re unsuitable to use this type of medication. This may be due to interactions between drugs or this medicine may worsen other health conditions.You should always speak to your doctor about any health conditions you may have before taking montelukast to ensure it’s safe for you to take.

Montelukast is a preventer medicine therefore it is not suitable to take if you’re experiencing a sudden attack of breathlessness, you should have other medicines available for when this happens.

Montelukast is also not suitable for children under 15 years of age unless taken at a lower dose in chewable form which has been prescribed by a doctor.

This medicine contains lactose which some people are intolerant to, if so you should speak to a doctor about whether montelukast is suitable for you.

If you have an allergy to montelukast or any other ingredient in this medicine, this treatment is not suitable for you, and you should avoid this medicine to prevent a reaction which could potentially be dangerous.

Montelukast and pregnancy

If you’re pregnant, planning to become pregnant, or are breastfeeding you should also speak to a doctor or pharmacist about the safety of starting a new medication and whether it is suitable for you to take. It’s important to keep your asthma under control during pregnancy, however, it has not been established whether it is safe to take montelukast while pregnant so you should always take your doctor’s advice before taking this medicine. Likewise, if you’re breastfeeding you should speak to your doctor about the safest way to control your asthma.

Montelukast and other medication

Montelukast may be used with other medicines to treat asthma, however, there are some medicines which may not be suitable to take in conjunction with montelukast. You should always check when starting a new medication that it is safe to take with any existing medication that you may be taking to avoid side effects and interaction between the drugs. There are some medicines you should be particularly aware of if you’re taking them with montelukast. You may not be suitable if you’re taking phenobarbital, phenytoin, rifampicin, and gemfibrozil. Discuss with your doctor if you’re taking any of these medicines or any other medication (prescription or non prescription) to ensure that they’re safe to take with montelukast.

How to take montelukast

Montelukast is a medicine that needs to be taken continuously to keep asthma under control. Always follow the directions of your doctor when taking this medicine, but the recommended dose is one 10mg tablet to be taken once a day in the evening.

What are the side effects of montelukast?

As with any medication there are side effects, but not everyone will experience them. Common side effects may affect 1 in 10 people and rare side effects can occur in 1 in 1,000 people or 1 in 10,000 people in very rare cases. If you experience any side effects you should consult your GP straight away.

Common side effects

Side effects which may occur in around 1 in 10 people include:

  • Abdominal pain
  • Headache
  • Upper respiratory infection
  • Rash
  • Diarrhoea
  • Nausea
  • Vomiting
  • Fever

Uncommon/rare side effects

The following side effects can be dangerous but do not occur often and some are very rare. Side effects which affect up to 1 in 1,000 people or up to 1 in 10,000 people include:

  • Dizziness, drowsiness, pins and needles
  • Seizure
  • Nosebleed
  • Dry mouth
  • Indigestion
  • Bruising, itching, hives
  • Joint or muscle pain
  • Tiredness
  • Increased bleeding tendency
  • Changes in mood or behaviour
  • Palpitations
  • Hepatitis

You should also look out for signs of an allergic reaction as this will require immediate medical attention. Symptoms of an allergic reaction will include swelling of the face, lips, and tongue, as well as difficulty breathing and swallowing.

If taking this medication is having a negative effect on your health and is not improving your asthma you should visit your GP for alternative treatment.

Is montelukast an effective asthma treatment?

For montelukast to be effective it’s important to continue taking this medicine as your doctor has prescribed, even if you’re not experiencing symptoms. Montelukast can effectively prevent and reduce the symptoms of asthma and keep it the condition under control particularly when used with other asthma treatments.

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Delivery Charges

The following delivery methods are currently available within the UK: All orders are sent in discreet, plain packaging.

UK Standard Delivery, £1.99

Order before 12pm to have your order delivered using Royal Mail Tracked 48 Service

standard UK delivery within 3-5 working days

Additional terms and conditions apply.

UK Express Delivery, £2.99

Order before 12pm to have your order delivered using the Express delivery service* (deliveries are made Monday - Saturday)

If you order after 12pm, your order will be dispatched the next working day and will be with you within 48 hours once dispatched. This excludes weekends and bank holidays

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Anytime, £4.99 (This service includes Saturday)

Order before 12pm to have your order delivered using Royal Mail Special Delivery Service, which includes Saturday deliveries.

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Before 1pm, £7.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 1pm next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

Additional terms and conditions apply.

Royal Mail Special Delivery Next Day Before 9am, £14.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 9am next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

Additional terms and conditions apply.

DPD Next Day Delivery, £4.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Next Day Delivery, by 12 Noon, £9.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 12 noon the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Next Day Delivery, by 10:30am, £14.99  (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Saturday Delivery, £14.99

Orders signed by the doctor before 12 noon the day before will be delivered the following Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply

DPD Saturday Delivery, by 12:00am, £21.99

Orders signed by the doctor before 12 noon the day before will be delivered by 12:00am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Saturday Delivery, by 10:30am, £29.99

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply, please see below.

US and outside the UK

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Terms and Conditions

Delivery options exclude Bank Holidays, public holidays and Sundays.All deliveries are subject to Doctor-4-u successfully receiving payment and prescription being approved by the doctor.

All purchases require additional approval, which will involve completion of an online questionnaire and any subsequent approval.

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