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Desloratadine 5mg

Desloratadine 5mg

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  • ✔️ Relieves hay fever, hives, and allergic rhinitis symptoms effectively
  • ✔️ Non-drowsy formula — stay alert throughout the day
  • ✔️ Once-daily tablet for consistent, round-the-clock allergy control
  • ✔️ Suitable for adults and adolescents aged 12 and over
  • ✔️ Targets sneezing, itching, runny nose, and watery eyes

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What Is Desloratadine 5mg and How Does It Help Allergies?

 

Allergies can make everyday life genuinely miserable. Whether it's the relentless sneezing of hay fever season, the itch of hives, or a permanently blocked nose, finding something that actually works — without leaving you drowsy — matters. Desloratadine 5mg is a non-sedating antihistamine tablet used to relieve the symptoms of allergic rhinitis (including hay fever) and chronic idiopathic urticaria (hives) in adults and adolescents aged 12 and over. You can explore our full range of allergy and hay fever treatments if you're looking for additional options alongside this medicine.

Desloratadine is the active metabolite of loratadine, meaning it's what loratadine converts into once your body processes it. Because it's already in its active form, it gets to work efficiently. It's widely used across Europe and the UK, and is recognised by the NHS as an effective treatment for allergic conditions.

 

How Does Desloratadine 5mg Work in the Body?

 

When your immune system encounters an allergen — pollen, dust mites, pet dander — it triggers the release of a chemical called histamine. Histamine binds to H1 receptors throughout your body, causing the familiar cascade of allergy symptoms. Desloratadine 5mg works by selectively blocking those H1 receptors, preventing histamine from binding and triggering a reaction.

  • Blocks peripheral H1 histamine receptors selectively
  • Reduces nasal congestion, sneezing, and itching
  • Inhibits the release of pro-inflammatory mediators from mast cells
  • Does not readily cross the blood-brain barrier, which is why it causes minimal sedation

The result? Symptom relief without the foggy head that older antihistamines like chlorphenamine can cause. That's a meaningful difference if you're driving, working, or studying.

 

Who Is Desloratadine 5mg Suitable For?

 

This medicine is appropriate for a broad range of people dealing with allergic conditions. It's particularly useful if you've tried sedating antihistamines and found them too disruptive to daily life. That said, it isn't right for everyone — always read the full patient information before starting.

  • Adults and adolescents aged 12 and over with seasonal or perennial allergic rhinitis
  • People experiencing chronic idiopathic urticaria (persistent hives without a clear cause)
  • Those who need to remain alert during the day (e.g. drivers, shift workers)
  • Individuals who have not responded adequately to other antihistamines

It is not recommended for children under 12 at this strength, and caution is advised in people with severe renal impairment. If you are pregnant or breastfeeding, speak to your GP or pharmacist before use.

 

How Does Desloratadine 5mg Compare to Other Antihistamines?

 

Feature Desloratadine 5mg Cetirizine 10mg
Sedation risk Very low Low to moderate in some individuals
Dosing frequency Once daily Once daily
Suitable for urticaria Yes Yes
Suitable for allergic rhinitis Yes Yes

 

Is Desloratadine 5mg Safe to Store at Home?

 

Yes — storage is straightforward. Keep your tablets below 25°C in a dry place, away from direct sunlight. Don't store them in the bathroom, where humidity can affect the tablets. Always keep medicines out of the reach and sight of children. If you're managing multiple conditions, you might also find our ear, nose, and throat treatments useful for related symptoms like nasal congestion.

Check the expiry date on the packaging before use. Do not use desloratadine 5mg after the expiry date printed on the blister pack or carton.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Desloratadine 5mg specifications
Treatment category Allergy / Antihistamine
Mechanism of action Selective peripheral H1 receptor antagonist
Effective for Allergic rhinitis, chronic idiopathic urticaria
Suitable for Adults and adolescents aged 12 and over
Active ingredient Desloratadine 5mg
Strengths 5mg
UK classification POM / P (depending on pack size and indication)
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Desloratadine 5mg

 

What Is Desloratadine 5mg and What Is It Used For?

 

Desloratadine 5mg is a second-generation, non-sedating antihistamine. It belongs to a class of medicines that work by blocking histamine H1 receptors, reducing the allergic response triggered by substances like pollen, animal dander, or dust mites. It is used to relieve the symptoms of allergic rhinitis — both seasonal (hay fever) and perennial (year-round) — as well as chronic idiopathic urticaria, a condition characterised by persistent itchy hives without an identifiable cause.

Symptoms it can help relieve include sneezing, a runny or blocked nose, itchy and watery eyes, itching of the nose and throat, and skin rash or hives. It is taken once daily and is suitable for adults and adolescents aged 12 and over.

 

What Do You Need to Know Before Using Desloratadine 5mg?

 

Before taking this medicine, it's important to be aware of the following contraindications and warnings:

  • Do not take if you are allergic to desloratadine, loratadine, or any of the other ingredients
  • Tell your doctor or pharmacist if you have severe kidney (renal) impairment
  • Not recommended for children under 12 years at this strength
  • Speak to your GP before use if you are pregnant or breastfeeding
  • Rare cases of seizures have been reported — inform your doctor if you have a history of epilepsy

Regarding drug interactions, no clinically significant interactions have been identified at standard therapeutic doses. However, caution is advised with the following:

  • Erythromycin (an antibiotic) — may increase plasma levels of desloratadine
  • Ketoconazole (an antifungal) — similarly may affect desloratadine metabolism
  • Alcohol — although desloratadine is non-sedating, combining with alcohol is not recommended

 

How Should You Use Desloratadine 5mg?

 

Always use this medicine exactly as directed by your pharmacist or as described in the patient information leaflet. Do not exceed the stated dose.

  1. Take one tablet by mouth once daily
  2. Swallow the tablet whole with a glass of water
  3. You may take it with or without food
  4. Try to take it at the same time each day to maintain consistent blood levels
  5. Continue for the duration recommended by your pharmacist or prescriber
Indication Age Group Dose Frequency
Allergic rhinitis Adults & adolescents (12+) 5mg (1 tablet) Once daily
Chronic urticaria Adults & adolescents (12+) 5mg (1 tablet) Once daily
Children under 12 Not applicable Not recommended at this strength

If you're also dealing with itchy, watery eyes as part of your allergy symptoms, you may find it helpful to browse our eye care range for additional relief options.

 

What Are the Possible Side Effects of Desloratadine 5mg?

 

Like all medicines, desloratadine 5mg can cause side effects, although not everyone experiences them. Most are mild and resolve on their own.

Common side effects (may affect up to 1 in 10 people):

  • Headache
  • Dry mouth
  • Fatigue or tiredness

Less common side effects (may affect up to 1 in 100 people):

  • Dizziness
  • Muscle pain (myalgia)
  • Elevated heart rate (tachycardia)
  • Stomach discomfort or nausea
  • Skin rash

Rarely, serious allergic reactions (anaphylaxis) have been reported. Seek immediate medical attention if you experience swelling of the face, lips, tongue, or throat, difficulty breathing, or a sudden drop in blood pressure. If you're managing skin-related allergy symptoms alongside your antihistamine, our skin care collection may offer complementary support.

 

How Should You Store Desloratadine 5mg?

 

  • Store below 25°C in a dry place
  • Keep away from direct sunlight and moisture
  • Do not store in the bathroom or near a sink
  • Keep out of the reach and sight of children
  • Do not use after the expiry date printed on the packaging
  • Do not dispose of medicines via wastewater or household waste — return unused tablets to your pharmacy

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy desloratadine 5mg online in the UK?

You can buy desloratadine 5mg online from Cured Pharmacy, a GPhC-registered UK online pharmacy. Simply complete a short health questionnaire and your order will be reviewed and dispensed by our qualified pharmacist team. We offer fast UK delivery so you can get your allergy relief without leaving home. You can also browse our full allergy and hay fever range for additional treatment options.

How does desloratadine 5mg work in the body?

Desloratadine is a selective H1 receptor antagonist — it works by blocking the histamine receptors that trigger allergy symptoms when your immune system encounters an allergen. Because it doesn't readily cross the blood-brain barrier, it causes far less sedation than older antihistamines. This makes it a practical choice for people who need to stay alert throughout the day.

How do I take desloratadine 5mg step by step?

Take one 5mg tablet by mouth once daily, with or without food. Swallow the tablet whole with a glass of water, and try to take it at the same time each day to keep blood levels consistent. Do not take more than one tablet in 24 hours unless specifically directed by a healthcare professional.

What is the best time of day to take desloratadine 5mg?

There is no clinically mandated time of day, but many people prefer taking it in the morning to cover daytime allergy exposure — particularly during hay fever season. Consistency is the key factor; taking it at the same time daily helps maintain steady levels in your system. If you find it causes any mild fatigue, switching to an evening dose is a reasonable option.

What are the side effects of desloratadine 5mg and how do I manage them?

The most commonly reported side effects are headache, dry mouth, and fatigue — these are generally mild and tend to resolve without intervention. Staying well hydrated can help with dry mouth, and taking the tablet with food may reduce any stomach discomfort. If you experience anything more serious, such as a rapid heartbeat or signs of an allergic reaction, contact your GP or pharmacist promptly.

Who is eligible to take desloratadine 5mg?

Desloratadine 5mg is suitable for adults and adolescents aged 12 and over who have allergic rhinitis or chronic idiopathic urticaria. It is not recommended for children under 12 at this strength. People with severe kidney impairment, or those who are pregnant or breastfeeding, should speak to their GP before use.

What happens if I miss a dose of desloratadine 5mg?

If you forget a dose, take it as soon as you remember — provided it's not nearly time for your next scheduled dose. If it is, simply skip the missed dose and carry on with your usual routine. Never take two tablets at once to make up for a missed one, as this won't improve symptom control and may increase the risk of side effects.

How does desloratadine 5mg compare to cetirizine 10mg?

Both are second-generation, non-sedating antihistamines taken once daily, and both are effective for allergic rhinitis and urticaria. Desloratadine is generally considered to have a slightly lower sedation risk than cetirizine in susceptible individuals, though both are well tolerated. Your pharmacist can help you decide which is more appropriate based on your personal health history and symptom pattern.

Can I take desloratadine 5mg every day long term?

Yes — desloratadine 5mg can be taken daily on a long-term basis for conditions like perennial allergic rhinitis or chronic urticaria, under the guidance of a healthcare professional. Clinical studies have not identified significant safety concerns with extended use at the recommended dose. It's still good practice to review your treatment periodically with your GP or pharmacist to ensure it remains appropriate.

Is desloratadine 5mg safe to take during pregnancy?

The safety of desloratadine during pregnancy has not been fully established in clinical trials, so it is not routinely recommended without medical advice. If you are pregnant or planning to become pregnant, speak to your GP before starting this medicine. They can weigh up the potential benefits against any risks and suggest the most appropriate option for you.

Can desloratadine 5mg be taken with other medicines?

No clinically significant drug interactions have been identified at standard doses, but caution is advised if you are taking erythromycin or ketoconazole, as these may affect how desloratadine is metabolised. Always tell your pharmacist about all medicines, supplements, and herbal remedies you are currently taking. Combining desloratadine with alcohol is not recommended.

Does desloratadine 5mg cause drowsiness?

Desloratadine is classified as a non-sedating antihistamine because it does not readily cross the blood-brain barrier, meaning it is far less likely to cause drowsiness than first-generation antihistamines like chlorphenamine. A small number of people may still experience mild fatigue, particularly when first starting treatment. If this occurs, try taking your tablet in the evening until your body adjusts.

What are the alternatives to desloratadine 5mg for hay fever?

Common alternatives include cetirizine 10mg, loratadine 10mg, and fexofenadine 120mg — all non-sedating antihistamines available in the UK. For nasal symptoms specifically, a corticosteroid nasal spray such as beclometasone may be used alongside an antihistamine. You can explore our allergy and hay fever collection to compare available options.

What are the latest findings on desloratadine for chronic urticaria?

Current clinical guidelines, including those from the British Association of Dermatologists, support second-generation antihistamines like desloratadine as first-line treatment for chronic urticaria. Research continues to explore higher doses in refractory cases, though this should only be considered under specialist supervision. The NHS recommends antihistamines as the primary pharmacological approach for managing urticaria symptoms.

Can I drive or operate machinery while taking desloratadine 5mg?

In most people, desloratadine 5mg does not impair the ability to drive or use machinery, as it is a non-sedating antihistamine. However, a small number of individuals may experience dizziness or fatigue, so it's sensible to see how the medicine affects you before driving. If you notice any impairment, do not drive and speak to your pharmacist or GP.

How Should You Use Desloratadine 5mg?

Using desloratadine 5mg correctly gives you the best chance of managing your allergy symptoms effectively. It's a once-daily tablet, which makes it easy to build into your routine. Follow these steps each time you take it:

Do not crush or chew the tablet. If you have difficulty swallowing tablets, speak to your pharmacist about alternative formulations that may be available.

What Is the Correct Dose of Desloratadine 5mg?

The standard dose for adults and adolescents aged 12 and over is one 5mg tablet once daily. Do not take more than the recommended dose — taking extra tablets will not improve symptom control and may increase the risk of side effects.

When Is the Best Time to Use Desloratadine 5mg?

Desloratadine 5mg can be taken at any time of day — morning or evening — as it is not time-sensitive in the way some medicines are. Many people find that taking it in the morning works well for managing daytime allergy symptoms, particularly during high pollen periods. If you notice any mild fatigue when you first start, shifting to an evening dose is a reasonable adjustment.

The most important thing is consistency. Taking your tablet at roughly the same time each day helps maintain steady levels of the medicine in your bloodstream, which supports continuous symptom relief rather than peaks and troughs.

How Long Can You Use Desloratadine 5mg For?

For seasonal allergic rhinitis, you would typically take desloratadine for the duration of the allergy season — often several weeks. For perennial rhinitis or chronic urticaria, longer-term daily use may be appropriate under the guidance of your GP or pharmacist. There is no evidence of tolerance developing with extended use at the recommended dose.

It's good practice to review your treatment periodically with a healthcare professional to confirm it remains the right option for you. If your symptoms change significantly or do not improve after a few weeks, seek advice rather than continuing indefinitely without reassessment.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Desloratadine 5mg?

Most people tolerate desloratadine 5mg well, and side effects are generally mild when they do occur. Because it is a non-sedating antihistamine, drowsiness is far less likely than with older medicines in this class. The following are the most frequently reported side effects:

  • Headache
  • Dry mouth
  • Fatigue or tiredness

These effects are usually short-lived. Staying well hydrated and taking the tablet with food can help reduce any discomfort. If headaches persist, speak to your pharmacist.

What Are the Less Common Side Effects of Desloratadine 5mg?

Less commonly, some people experience side effects that are worth being aware of, even if they affect only a small proportion of users. These include:

  • Dizziness
  • Muscle pain (myalgia)
  • Elevated heart rate (tachycardia or palpitations)
  • Nausea or stomach discomfort
  • Skin rash
  • Insomnia (difficulty sleeping) — reported rarely

If you notice any of these and they are troublesome or persistent, stop taking the medicine and consult your pharmacist or GP. Don't assume a side effect will resolve on its own if it's affecting your quality of life.

What Are the Serious Side Effects of Desloratadine 5mg?

Serious side effects are rare but require immediate medical attention. Hypersensitivity reactions — including anaphylaxis — have been reported in a very small number of people. Seek emergency help straight away if you experience any of the following after taking desloratadine:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Sudden drop in blood pressure or feeling faint
  • Severe skin reactions such as widespread blistering or peeling

These reactions are uncommon, but it's important to know the signs. If in doubt, call 999 or go to your nearest A&E department.

What Should You Do If You Experience Side Effects of Desloratadine 5mg?

For mild side effects, simple measures like drinking more water, taking the tablet with food, or adjusting the time of day you take it can make a real difference. If a side effect is moderate or doesn't improve within a few days, contact your pharmacist — they can advise whether to continue, adjust your dose, or switch to an alternative. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Desloratadine 5mg Interact With Other Medicines?

No clinically significant interactions have been identified at the standard 5mg dose in most patients. However, medicines that affect liver enzyme activity — particularly erythromycin (an antibiotic) and ketoconazole (an antifungal) — may increase plasma concentrations of desloratadine. Always inform your pharmacist or prescriber of all medicines, supplements, and herbal products you are taking before starting desloratadine. Combining this medicine with alcohol is not recommended, even though sedation risk is low.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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