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Cetirizine
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Cetirizine is a high-efficacy second-generation antihistamine used to treat allergic rhinitis and chronic urticaria by blocking the action of histamine in the body.
- Fast-acting relief for hay fever, pet allergies, and dust mite reactions
- Non-drowsy formula designed to manage symptoms without impacting your daily routine
- Convenient once-daily dosage provides consistent 24-hour protection
- Flexible fulfilment available for both NHS and private prescriptions
More information
"Cetirizine hydrochloride is a widely trusted antihistamine treatment typically prescribed to alleviate the distressing symptoms of seasonal allergic rhinitis, perennial allergies, and chronic idiopathic urticaria. By effectively targeting H1 receptors, it helps patients manage sneezing, itchy eyes, and skin rashes with a low incidence of sedation." - Rachael Clarke MRCPharm MFRPSI FRSPH (GPHC Number: 2061366)
You can buy Cetirizine safely through our streamlined online consultation process which is reviewed by a UK registered prescriber. Once your consultation is approved, your medication is dispensed and shipped directly from our registered pharmacy (GPHC Number: 9011560) in discreet packaging to ensure your privacy.
We offer competitive pricing for Cetirizine to ensure that essential allergy relief remains accessible for all patients. Choosing generic Cetirizine hydrochloride over branded alternatives like Zirtek or Piriteze often provides a more cost-effective solution while delivering the exact same clinical efficacy and active ingredient.
Mail my Meds provides a range of flexible delivery options to suit your schedule, including tracked Royal Mail services. Whether you are fulfilling a one-off private order or setting up a repeat NHS prescription, we ensure your allergy medication reaches your doorstep promptly and securely.
Cetirizine is a medicinal antihistamine used to treat various allergic conditions including hay fever, conjunctivitis, and skin reactions like hives. It is particularly effective for UK residents during the high pollen count months or for those with year-round sensitivities to indoor allergens like mould or animal dander.
The primary active ingredient in this medication is Cetirizine hydrochloride. Depending on the specific formulation, the tablets may also contain inactive excipients such as lactose monohydrate, magnesium stearate, and hypromellose, which assist in the stability and delivery of the medicine.
Most users report that Cetirizine provides rapid relief within 30 to 60 minutes of ingestion. While classified as a non-drowsy antihistamine, a small percentage of patients (approximately 10%) find it can cause mild sleepiness, though this is significantly less common than with older medications like Chlorphenamine.
Every order includes a comprehensive Patient Information Leaflet (PIL) that details specific manufacturer guidance and safety data. You should read this leaflet thoroughly before starting your treatment to understand the full profile of the medication and any specific excipients included in your batch.
Cetirizine works by selectively blocking peripheral H1 receptors, preventing histamine from binding and triggering an allergic response. When your body encounters an allergen like pollen, it releases histamine. By blocking these receptors, Cetirizine stops the inflammatory cycle that leads to sneezing, itching, and watery eyes.
You should swallow the tablet whole with a glass of water, either with or without food. For the most effective management of hay fever symptoms, it is often recommended to take your dose at a consistent time each day during the allergy season to maintain steady levels of the medicine in your system.
The standard adult dosage for Cetirizine is one 10mg tablet taken once daily. For children aged 6 to 12 years, the dose is usually split into 5mg taken twice daily, while those with underlying kidney issues may require a reduced frequency as advised by a healthcare professional.
While generally well-tolerated, some individuals may experience mild side effects while their body adjusts to the medication. Common side effects include:
- Headaches or dizziness
- Dry mouth
- Fatigue or mild somnolence
- Sore throat or nausea
Do not take Cetirizine if you have severe kidney failure or a known allergy to any of the ingredients. You should exercise caution if you are consuming alcohol or taking other sedating medications, and always consult a professional if you are pregnant or breastfeeding before starting a new course of antihistamines.
| Medication | Speed of Onset | Drowsiness Risk | Duration |
|---|---|---|---|
| Cetirizine | Fast (30-60 mins) | Low (but possible) | 24 Hours |
| Loratadine | Moderate (1-3 hours) | Very Low | 24 Hours |
| Fexofenadine | Moderate | Minimal | 24 Hours |
Is Cetirizine better than Loratadine?
Cetirizine is often considered to have a faster onset of action and may be more effective for skin-based allergies like insect bites. However, Loratadine is less likely to cause even mild drowsiness in sensitive individuals.
Can I take Cetirizine every day?
Yes, Cetirizine is safe for long-term daily use during the hay fever season or for chronic conditions when used according to the recommended dosage. If symptoms persist despite daily use, you should speak with a pharmacist.
Does Cetirizine interact with alcohol?
While Cetirizine does not have a dangerous interaction with alcohol for most people, it can increase the risk of drowsiness. It is best to avoid alcohol until you know how the medication affects your alertness.
The information provided on this page is for general informational purposes only and should not replace seeking a medical professional for personalised advice. Always consult with a doctor or pharmacist to ensure a treatment is suitable for your specific health needs.
Our content is regularly reviewed by our team of medical experts to ensure it is up to date and accurate. We adhere to strict clinical standards to provide reliable health information to our patients across the UK.

