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Hay fever is caused by allergens such as pollen or dust, which leads to inflammation and symptoms such as sneezing, a runny nose or watering eyes.
You may find you react to different pollens throughout spring and summer. Tree pollen affects people between March and May, and grass pollen between June and July. Weed pollen is less common, but can occur between July and September.
There are several options to help treat hay fever. Daily antihistamine tablets will help to manage most symptoms, and nasal sprays and eye drop solutions can also be used to treat specific areas of irritation.
During hay fever season, it’s important to take an antihistamine tablet daily to manage your symptoms during this time.
You might experience some drowsiness, nausea or a dry mouth. These are uncommon side effects, and normally happen in the first few days of taking Cetirizine.
Another rare side effect that can occur with Cetirizine is a fast heart rate. If this happens, you should stop taking this medicine and contact 111 or your GP for further advice.
Always read the patient information leaflet before commencing treatment.
View patient information leaflet.Cetirizine is an antihistamine. It helps to relieve the symptoms of allergies, such as hay fever, hives and eczema.
Cetirizine reduces the amount of histamine your body produces during an allergic reaction, which helps to relieve symptoms such as itching, swelling and sneezing.
Cetirizine should get to work quickly, so you should expect to see results within the first day of taking it.
Hay fever (seasonal allergic rhinitis) is an allergic reaction that causes inflammation of the inside of the nose. It’s a very common condition, estimated to affect around 1 in every 5 people in the UK.
Cetirizine is not recommended for breastfeeding women to take. It is also unsuitable for patients with kidney problems.
Cetirizine is a tablet that should be taken once daily to help manage hay fever symptoms. It can be taken with or without food.
Impressively quick service. Easy site to navigate and meds delivered by reliable Royal Mail, so well pleased. Thank you!
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Full information, quick delivery, follow up email. Professional would not purchase from anyone else.
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Very fast delivery, I am happy with the speed that I got to order what I needed and fast delivery, really needed to start taking the product. Thank you.
Such an easy way to get medication quickly. Superb service and quick delivery. I couldn’t even get through to my Drs so although this costs a bit more it’s infinitely quicker.
Fantastic and quick response, no hassle trying to get a doctor appointment, thanks MedExpress.
I have used them many times & the procedure is very easy & the delivery very quick.
This is a brilliant service and so quick and efficient. I would have had to wait god knows how long for a GP appointment for this medication.
Checked properly by a doctor before medication was prescribed and aftercare very good. Received yesterday kept up to date with the delivery and had to sign for which I like so there’s no missing parcel. Highly recommended.
Trustworthy, professional and speedy delivery service. I have used this pharmacy a few times and I would recommend!

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Catriona is a doctor with 20 years of clinical experience. She is committed to improving healthcare access and quality for our patients. With a strong background in research and education, she oversees the wider clinical team as well as new product development to ensure that were providing leading medical care.

Adam is a doctor and advocate for increasing access to healthcare internationally. He has extensive experience in video consultations, technology-enabled examinations, remote biomarker testing, and education. He is a published author and has medical licenses in the UK, Spain and Republic of Ireland.

Consultant GP and Quality Lead
MBBS, BSc, MRCGP, DRCOG, PGDip Clinical Dermatology
Safia is a GP with experience working in the NHS with a particular interest in diabetes and weight loss management. She is passionate about the power of digital healthcare and oversees our approach to patient safety and regulatory compliance.

Declan is a pharmacist with 15 years of experience and is passionate about digital healthcare. He has extensive experience across all pharmacy sectors in the UK and Ireland. He has led the clinical and regulatory functions of some of the biggest pharmacy organisations in the UK and is excited about the future of the industry.