Decongestants
مراجعة من قبل Dr Hayley Willacy, FRCGP آخر تحديث بواسطة الدكتورة سورانجي مينديس، MRCGPLast updated 3 Apr 2023
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Decongestants are medicines that are used to help reduce the symptoms of a blocked or stuffy nose. They may be helpful for congestion caused by various conditions. Most commonly, decongestants are used for a cold, sinusitis, hay fever, allergies and rhinitis. These medicines are available as nose drops or nasal sprays and also as tablets, capsules and syrup. Decongestant nose drops or nasal sprays should not be used for more than five days at a time.
These medicines are not suitable for children under 6 years old.
At a glance
Decongestants are medicines that help ease a blocked or stuffy nose.
They work by reducing swelling in the blood vessels in your nose, throat, and sinuses.
Decongestants are available as nasal sprays or drops, and as tablets or syrups.
Nasal decongestant sprays or drops should not be used for more than 3-5 days.
They should not be used in children under 6 years old.
Some people with certain health conditions should avoid taking decongestants.
Always check with your pharmacist or doctor if you are unsure about using decongestants.

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تحقق من التفاعلات المحتملة بين الأدوية والمكملات الغذائية والأطعمة قبل تناولها معًا.
في هذه المقالة:
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تابع القراءة أدناه
What are decongestants?
Decongestants are medicines that are used to help ease a blocked or stuffy nose (nasal congestion). Conditions which cause congestion include:
Hay fever or other allergies.
These conditions cause swelling of the tissues and blood vessels that line the nasal passageway and sinuses. This, in turn, causes the nose to become blocked.
A number of decongestants are available in the UK. They include:
Oxymetazoline.
Phenylephrine.
Pseudoephedrine.
ملاحظة المحرر
الدكتور كريشنا فاخاريا, 21st February 2024
A note on pseudoephedrine-containing products.
The Medicines and Healthcare products Regulatory Agency has issued a caution for those using pseudoephedrine-containing products.
There have been rare reports of two conditions associated with pseudoephedrine use - posterior reversible encephalopathy syndrome (PRES) and reversible cerebral vasoconstriction syndrome (RCVS).
Following a review by MHRA - the safety information of all pseudoephedrine-containing medicines will be updated to provide clearer descriptions of these risks and potential risk factors for these conditions for both patients and healthcare professionals.
PRES- also known as reversible posterior leukoencephalopathy syndrome (RPLS). This is a rare condition in which parts of the brain are affected by swelling - usually as a result of an underlying cause. Symptoms include headache, changes in vision, and seizures, with some developing other neurological symptoms such as confusion or weakness of one or more limbs. Most patients fully recover.
RCVS - is a neurological disorder. There is a sudden onset of severe headache associated with narrowing of the blood vessels that supply blood to the brain. On brain imaging the narrowing of the blood vessels can look similar to a “string of beads”. Very rarely, RCVS can present as a medical emergency with strokes (ischaemic strokes or bleed), seizure or as brain swelling. Usually, the narrowing resolves by itself within three months, and most patients fully recover.
MHRA is reminding users that:
Pseudoephedrine is for short term use only and should only be used to relieve symptoms of nasal and sinus congestion in colds, flu, and allergies.
No one should take pseudoephedrine if they have high blood pressure (hypertension) or hypertension not controlled by their medicines, or if they have severe acute (sudden onset) or chronic (long-term) kidney disease or kidney failure.
If you experience a severe headache that develops very quickly or you suddenly feel sick or are vomiting, confused or experiencing seizures or changes in vision while taking this medicine, stop taking it immediately and seek urgent medical attention.
A reminder that this is extremely rare - there have only been 4 cases reported by the نظام البطاقة الصفراء to date- out of 4 million packets sold in 2022.
Some are available as nasal sprays or drops (sometimes referred to as topical decongestants). Some are available to take by mouth as a tablet or syrup. Some are available in both forms.
These medicines come in various brand names. Many are available to buy over the counter from your pharmacy. They may also be available as a combined tablet that contains a decongestant and a painkiller such as paracetamol.
There are a number of other options that are sometimes used to treat nasal congestion. For example, the following may be helpful:
Salt water (saline) nose drops. These are a popular treatment for a stuffy nose in a baby.
Steam inhalations. Steam may help to clear the nasal congestion but only has an effect for a short time. This may be useful before bedtime to help you get off to sleep.
Do decongestants help?
How do decongestants work?
العودة إلى المحتوياتMost decongestants work by reducing the swelling of the blood vessels in your nose, throat and sinuses. As it is this swelling causing the congestion, the medication improves the blocked-up feeling.
Ipratropium nasal spray works slightly differently by drying up the secretions of the nose.
Decongestant nasal sprays tend to have an immediate effect to clear a blocked nose. Oral tablets and capsules may take a little longer to work because they need to be absorbed into the body from the gut.
تابع القراءة أدناه
When are decongestants used or prescribed?
العودة إلى المحتوياتAs discussed above, these medicines may be used or prescribed by your doctor to ease nasal congestion for people with the نزلات البرد, sinusitis, hay fever, other allergies or rhinitis.
If you have hay fever, they are helpful to use for a few days to clear a blocked nose when you first use a steroid nasal spray. The steroid can then get to the lining of the nose more effectively. If you have acute sinusitis, decongestants can relieve symptoms whilst you are waiting for your immune system to clear the infection. However, they are not thought to shorten the duration of sinusitis.
Decongestant nasal sprays and nose drops should only be used for about 3-5 days at a time. If they are used for longer than this a rebound, more severe congestion of the nose often develops. Oxymetazoline and xylometazoline nasal preparations are thought to be more likely to cause rebound nasal congestion because they are the strongest.
Oral decongestants are not thought to cause this problem when they are stopped. Decongestant sprays and drops are thought to work better than oral tablets or capsules.
Some important considerations
العودة إلى المحتوياتSome important considerations about decongestants relate to:
Children under 6 years old.
تناول أدوية أخرى.
Children under 6 years old
These medicines should not be used in children under 6 years old. The risk of side-effects is higher than any benefit they may have. Children aged 6 to 12 can use some decongestants following discussion with a pharmacist.
تناول أدوية أخرى
It is important to remember that some medicines that treat colds or sinusitis contain other medicines as well. For example, some may contain الباراسيتامول أو الإيبوبروفين and some contain alcohol.
This is important if you are already taking paracetamol or ibuprofen to help the symptoms of your infection (for example, a high temperature). You may take too much paracetamol or ibuprofen (overdose) without realising. Taking too much paracetamol can damage your liver.
You should also not use these decongestants while you are taking a certain type of antidepressant called a monoamine-oxidase inhibitor (MAOI) and for two weeks after you stop it. This is because, when taken at the same time as an MAOI antidepressant, decongestants may cause very large increases in blood pressure.
تابع القراءة أدناه
Side-effects of decongestants
العودة إلى المحتوياتMost people are able to take or use decongestant medicine with very few, or no, side-effects. If side-effects do occur, they usually go away after a few days. Some nasal decongestants may produce side-effects such as:
Oral decongestants may cause side-effects such as:
Restlessness.
Problems with sleeping.
Being aware of a fast or fluttering heartbeat.
See the leaflet that came with your medicines for more detailed information on the side-effects of these medicines.
Can I buy decongestants?
العودة إلى المحتوياتThere are a large number of oral and nasal decongestants that you can buy from your local pharmacy or supermarket. They have many different brand names.
Who cannot take decongestants?
العودة إلى المحتوياتSome people should avoid taking decongestants. This includes people who have:
Heart problems, such as coronary artery disease, heart failure or arrhythmias (irregular heart beat).
Kidney problems, such as chronic kidney disease.
داء السكري.
Glaucoma.
An overactive thyroid gland.
Prostate problems, such as difficulty passing urine due to prostate enlargement.
الاكتئاب and take an MAOI antidepressant.
Circulation problems, including Raynaud’s phenomenon.
See the leaflet that came with your medicines for more detailed information on who should avoid taking these medicines. If you are unsure whether these medicines are safe for you, always ask your pharmacist or doctor for advice.
Patient picks for Respiratory medicines

العلاج والأدوية
Mucolytics
Mucus (sputum) is made in the lungs. Mucolytics are medicines that make the mucus less thick and sticky and easier to cough up. They are usually prescribed for people who have a long-term (chronic) cough. They work best if taken regularly.
بقلم الدكتورة فيليبا فينسنت، MRCGP

العلاج والأدوية
Steroid nasal sprays
Steroid nasal sprays are medicines that are commonly used to treat symptoms of stuffiness or congestion in the nose. They are used most often for allergies of the nose, such as hay fever. They are also used for other causes of persistent inflammation of the nose (rhinitis). Steroid sprays reduce swelling and mucus in the nose, and usually work well. People with hay fever only need to use them for a few months of the year. Others may need to use them long-term. You can buy some steroid nasal sprays from your supermarket or local pharmacy, without a prescription.
بقلم الدكتورة راشيل هدسون، MRCGP

غير متأكد من خلط الأدوية؟
تحقق من التفاعلات المحتملة بين الأدوية والمكملات الغذائية والأطعمة قبل تناولها معًا.
الأسئلة الشائعة
Can I use decongestants for a long time if my nose is always blocked?
Decongestant nasal sprays and drops should only be used for about 3-5 days at a time. If used for longer, you might experience a rebound effect where your nose becomes even more severely blocked than before. Oral decongestants are not thought to cause this problem with prolonged use.
What common ingredients should I look out for in cold and flu remedies that might already contain decongestants?
Some cold or sinusitis medicines combine decongestants with other ingredients like paracetamol or ibuprofen. It's important to check the labels to avoid accidentally taking too much of these alongside other medications you might be using for symptoms like a high temperature, as too much paracetamol can damage your liver.
Are there any decongestants that work differently from most others?
Yes, ipratropium nasal spray works in a slightly different way. While most decongestants reduce swelling of blood vessels in your nose, throat, and sinuses, ipratropium nasal spray specifically dries up the secretions in your nose.
I'm pregnant/breastfeeding. Can I use decongestants?
The article does not contain information about the use of decongestants during pregnancy or breastfeeding. It is best to consult the leaflet that comes with your medicines or speak to a pharmacist or doctor if you have concerns about taking decongestants in these circumstances.
What is the difference in how quickly nasal sprays and tablets work?
Decongestant nasal sprays tend to have an immediate effect because they are applied directly where they are needed. Oral tablets and capsules, however, may take a little longer to work as they need to be absorbed into your body from your gut first.
My child aged 4 has a stuffy nose. Can I give them decongestants?
No, decongestants should not be used in children under 6 years old because the risk of side-effects is higher than any potential benefit. For children aged 6 to 12, some decongestants may be suitable, but this should only be done after discussing it with a pharmacist.
What are some non-medicine options for a stuffy nose?
Salt water (saline) nose drops are a popular treatment, especially for babies. Steam inhalations can also help clear nasal congestion temporarily and may be useful before bedtime to aid sleep.
قراءة إضافية ومراجع
- Over-the-counter cough and cold medicines for children; Medicines and Healthcare products Regulatory Agency (MHRA), 2014
- الدليل الوطني البريطاني للأدوية (BNF); خدمات الأدلة NICE (الوصول متاح فقط في المملكة المتحدة)
- نزلات البرد; NICE CKS, February 2022 (UK access only)
- التهاب الجيوب الأنفية; NICE CKS، مارس 2021 (الوصول متاح فقط في المملكة المتحدة)
- Deckx L, De Sutter AI, Guo L, et al; Nasal decongestants in monotherapy for the common cold. Cochrane Database Syst Rev. 2016 Oct 17;10(10):CD009612. doi: 10.1002/14651858.CD009612.pub2.
- De Sutter AI, Eriksson L, van Driel ML; Oral antihistamine-decongestant-analgesic combinations for the common cold. Cochrane Database Syst Rev. 2022 Jan 21;1(1):CD004976. doi: 10.1002/14651858.CD004976.pub4.
- Watts AM, Cripps AW, West NP, et al; Modulation of Allergic Inflammation in the Nasal Mucosa of Allergic Rhinitis Sufferers With Topical Pharmaceutical Agents. Front Pharmacol. 2019 Mar 29;10:294. doi: 10.3389/fphar.2019.00294. eCollection 2019.
تابع القراءة أدناه
About the author

Jenny Whitehall
BSc (Hons), Diploma in Pharmacy Practice
About the reviewerView full bio

الدكتورة هايلي ويلاسي، زميلة الكلية الملكية للأطباء العامين
General Practitioner, Medical Author
MBChB (1992), DRCOG, DFFP, MRCOG (Part 1) MRCGP (2007), DFSRH (2013), MSc - medical education (2020)
Dr Hayley Willacy was an NHS GP working in northwest England, who retired from clinical practice in 2022 after 30 years.
تاريخ المقال
تمت كتابة المعلومات على هذه الصفحة ومراجعتها من قبل أطباء مؤهلين.
Next review due: 16 Feb 2028
3 Apr 2023 | أحدث إصدار
آخر تحديث بواسطة
الدكتورة سورانجي مينديس، MRCGPمراجعة من قبل
الدكتورة هايلي ويلاسي، زميلة الكلية الملكية للأطباء العامين2 Oct 2012 | نُشر في الأصل
كتبه:
Jenny Whitehall

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