
Quand devrais-je commencer à prendre des comprimés contre le rhume des foins ?
Revu par Dr Colin Tidy, MRCGPDernière mise à jour par Lynn StephenDernière mise à jour 20 Feb 2026
Respecte les directives éditoriales
- TéléchargerTélécharger
- Partager
- Language
- Discussion
- Ask Patient
- Version audio
- Ajouter aux sources préférées sur Google
Is it too early to start taking hay fever tablets? Experts reveal that these work best when started ahead of hay fever season - before the symptoms irritate 1 in 5 of us in spring and summer.
Hay fever tablets are a popular fast-acting treatment option for immediate relief. We explore how they can also be used as a preventative measure before the weather warms, the flowers bloom, and hay fever season kicks in.
Explore nasal sprays for allergies
Get expert healthcare advice from the comfort of home. Complete a quick online consultation, available 24/7, with your request reviewed by a UK-registered clinician. Next day delivery available on eligible treatments.
Springing into allergy season
Spring brings the promise of brighter, longer days spent among blooming flowers and lush greenery. While this thought might bring a smile to your face, if you have rhume des foins spring also marks the beginning of allergy season - and its struggles.
Qu'est-ce que le rhume des foins ?
According to Margaret Kelman, specialist allergy nurse at Allergy UK, hay fever is a very common allergy that affects up to 15% of children and 26% of adults in the UK.
"It is a seasonal form of allergic rhinitis, where the nose lining becomes inflamed," she explains.
This happens in certain people who have an over-sensitivity to pollen - the fine powder made by flowers, plants, or trees that can drift through the air in high quantities during spring and summer. In people with hay fever, pollen is an allergen that triggers an système immunitaire response, where cells lining the nose and eyes release chemicals to fight what the body perceives as a threatening foreign substance.
Common hay fever symptoms
It is this immune response that causes the symptoms of hay fever that irritate and inconvenience so many people each year.
"The main areas affected are the nose, throat, and eyes as these are connected by the same tubes," says Kelman.
Common symptoms of hay fever include:
Nez qui coule.
Itchy nose.
Blocked nose.
Gorge qui gratte.
Yeux qui démangent.
Yeux larmoyants.
Eternuements.
Asthma symptoms such as détresse respiratoire sévère et sifflements - for people with asthma, hay fever season can make symptoms worse.
When does hay fever start?
You may find that you experience hay fever at different times than other people. This is because there are three types of pollen that peak at different times over the summer months. You could be allergic to one, two, or all three pollen types if you're really unlucky.
These pollen seasons can vary from one year to the next depending on the weather.
Kelman outlines the typical peak periods for different types of pollen:
Tree pollen season - early to late spring (March to May).
Grass pollen season - late spring to late summer (May-July/August). This is the most common pollen allergy.
Weed pollen season - late summer to early autumn (July to September).
Why are hay fever tablets important?
Of course, the most effective way to avoid hay fever would be to avoid being outside and around pollen. However, it is almost impossible to avoid pollen totally and no one wants to be cooped up inside for weeks on end.
What you can do is keep track of the pollen count during these months. With TV, radio, and newspaper coverage this is relatively easy to do over spring and summer. You can also check the current pollen forecast online. A pollen count of over 50 is considered high.
Hay fever tablets are a common, fast-acting, and highly effective option for treating most hay fever symptoms. Hay fever tablets are antihistaminiques, working by blocking the chain reaction that happens when your body releases the chemical 'histamine' as part of its symptom-inducing immune response to pollen.
Kelman describes the benefits of hay fever tablets:
Improved quality of life
People with allergic rhinitis such as hay fever report that symptoms cause significant disruptions to their daily lives. Hay fever tablets can improve outcomes relating to sommeil, fatigue, irritability, and a range of practical issues.
Protection against infection
Untreated allergic rhinitis such as hay fever can also result in the mucus in the nose stagnating. This can lead to infection.
Protection against asthma
If you have asthma, not treating hay fever can make your condition worse. What's more, hay fever is also a risk factor for developing asthma when pollen is inhaled into the lungs.
More than 40% of people with allergic rhinitis have asthma, and over 80% of people with asthma also have allergic rhinitis.
When should you start taking hay fever tablets?
While hay fever tablets can be used for immediate symptom relief, they are also an effective pre-treatment. If you regularly experience hay fever and know the time of year your symptoms kick in, start taking hay fever tablets early.
"Taking hay fever tablets every day for one to two weeks before the season starts is ideal," says Kelman. "Although for some people this isn’t always easy to predict."
This is because once your allergic reaction to pollen starts, it's harder to stop. A chain reaction occurs where more inflammatory cells are sent to your nose where the pollen lodges, causing your symptoms to become more severe.
By starting antihistamines such as hay fever tablets a few weeks early, you can effectively block this reaction before it begins. For some people, this may prevent symptoms entirely. For others, it at least limits irritation and could help to prevent an asthma flare-up.
When are hay fever tablets the right choice?
Kelman explains that hay fever tablets are antihistamines, meaning they can both prevent and ease itchiness and runny symptoms in your nose, eyes, and throat.
"However, they are unable to treat congestion - a blocked and stuffy nose and sinuses," she says. "For this, you'll need to use a spray nasal stéroïdien."
Many steroid nasal sprays are available over-the-counter. They work best when treatment is started ahead of hay fever season - around four weeks in advance - to allow time for the cells to turn off the chemicals that trigger inflammation.
Il y a plusieurs other forms of hay fever medicine, including syrups, eye drops, antihistamine sprays, and - in very severe cases - injections.
"It's always worth asking your pharmacist what they recommend for your symptoms and allergy level," Kelman advises. "Especially if over-the-counter hay fever tablets aren't working within a few days of regular use."
Hay fever tablet fact sheet
How many hay fever tablets can I take?
Kelman recommends taking hay fever tablets once a day until the hay fever season ends. Antihistamines are generally considered relatively safe and taking more than the recommended dose is unlikely to cause you serious harm.
However, limiting your intake to once a day may protect you from short-term side effects, including drowsiness, récurrents, and dry mouth. Non-sedating antihistamines are approved for long-term use, allowing you to use them throughout the spring and summer as required.
Can you have paracetamol with hay fever tablets?
According to Kelman, it is "perfectly safe" to combine hay fever tablets with le paracétamol. This said it's worth speaking to a pharmacist if you're taking other medicines regularly, as mixing certain ones could stop them from working or cause side effects.
Can you take hay fever tablets while pregnant?
According to Kelman, it's always wise to speak to your healthcare provider.
"Some may recommend non-sedating antihistamines," she says. "But while there's no evidence of harm there's also no strong proof that this is completely harm-free during pregnancy."
Which hay fever tablets make you drowsy?
Drowsy antihistamines, called sedating histamines, can cause 10-50% of people to feel excessively tired and groggy.
Ceux-ci incluent :
Chlorphenamine.
Cinnarizine.
Diphenhydramine.
Hydroxyzine
Kelman recommends non-sedating hay fever tablets because they are much less likely to cause drowsiness and in most cases they also provide longer-lasting protection - around 12-16 hours compared to 4-6 hours for sedating antihistamines.
Ceux-ci incluent :
Loratadine.
Cetirizine.
Fexofenadine.
Acrivastine.
As both types carry some chance of drowsiness, the National Institute for Health and Care Excellence (NICE) guidance highlights that:
Some people's ability to drive may be affected.
Alcohol can increase the drowsiness effects.
Explore nasal sprays for allergies
Get expert healthcare advice from the comfort of home. Complete a quick online consultation, available 24/7, with your request reviewed by a UK-registered clinician. Next day delivery available on eligible treatments.
Sélections des patients pour Rhume des foins

Allergies, sang et système immunitaire
Quel type de spray nasal contre le rhume des foins vous convient le mieux ?
Pour les personnes souffrant du rhume des foins, il est presque impossible d'éviter complètement le pollen tout au long du printemps et de l'été. Heureusement, il existe des traitements qui peuvent soulager le rhume des foins, sous forme de comprimés oraux, de gouttes pour les yeux, de méthodes non médicamenteuses et de sprays nasaux. Avec autant d'options à considérer, comment savoir si les sprays nasaux vous conviennent, et quel type de spray nasal contre le rhume des foins est le meilleur ?
par Amberley Davis

Allergies, sang et système immunitaire
Rhume des foins : Comment faire face à une 'bombe de pollen'
Avec le temps plus chaud, l'odeur alléchante des barbecues flotte à travers nos fenêtres - mais ce n'est pas la seule chose dans l'air. Les niveaux de pollen sont toujours plus élevés pendant les mois chauds - et lorsque nous avons des périodes de journées chaudes et sèches, nous pouvons avoir ce que l'on appelle une bombe de pollen.
par Lydia Smith
Questions fréquemment posées
Quelle est la différence entre les comprimés pour le rhume des foins sédatifs et non sédatifs ?
Les comprimés antihistaminiques sédatifs, tels que la chlorphénamine, la cinnarizine, la diphénhydramine et l'hydroxyzine, peuvent provoquer chez 10 à 50 % des personnes une sensation de fatigue excessive et de somnolence. Les comprimés antihistaminiques non sédatifs, y compris la loratadine, la cétirizine, la fexofénadine et l'acrivastine, sont beaucoup moins susceptibles de provoquer de la somnolence et offrent généralement une protection plus longue, généralement de 12 à 16 heures par rapport à 4 à 6 heures pour les types sédatifs.
Les comprimés contre le rhume des foins peuvent-ils aider à déboucher le nez ?
Les comprimés contre le rhume des foins, qui sont des antihistaminiques, sont efficaces pour prévenir et soulager les symptômes de démangeaisons et d'écoulement dans le nez, les yeux et la gorge. Cependant, ils ne sont généralement pas capables de traiter la congestion, comme un nez bouché et encombré et les sinus. Pour ce symptôme, un spray nasal stéroïdien est généralement recommandé.
Combien de temps devrais-je continuer à prendre des comprimés contre le rhume des foins ?
Il est recommandé de prendre des comprimés contre le rhume des foins une fois par jour jusqu'à la fin de la saison du rhume des foins, qui peut durer tout au long du printemps et de l'été. Les antihistaminiques non sédatifs sont approuvés pour une utilisation à long terme, permettant de les utiliser pendant ces mois selon les besoins.
À propos du critiqueVoir la biographie complète

Dr Colin Tidy, MRCGP
Médecin généraliste, Auteur médical
MBBS, MRCGP, MRCP (Paediatrics), DCH
Le Dr Colin Tidy est un médecin du NHS, basé dans l'Oxfordshire.
Historique de l'article
Article également disponible en Anglais, Allemand, Espagnol, Français, Italien, Portugais, Hindi, Hébreu, Arabe, and Suédois.
Next review due: 20 Feb 2029
20 Feb 2026 | Dernière version
6 Apr 2022 | Publié à l'origine
Écrit par :
Amberley Davis
Partagez vos pensées ou expériences avec les autres dans notre communautés de patients.
Inscrivez-vous à la newsletter Patient
Votre dose hebdomadaire de conseils de santé clairs et fiables - rédigés pour vous aider à vous sentir informé, confiant et maître de la situation.
En vous abonnant, vous acceptez notre Politique de confidentialité. Vous pouvez vous désabonner à tout moment. Nous ne vendons jamais vos données.



