Antihistamines

Sneezing, a runny nose and itchy, watery eyes caused by pollen, dust mites or pets are the classic reasons to reach for an antihistamine, and cetirizine and loratadine are also used for itchy skin rashes such as hives. The range focuses on once-a-day tablets that are less likely to cause drowsiness than older types: cetirizine from Zirtek, loratadine from Clarityn and fexofenadine from Telfast, plus a generic fexofenadine and an oral solution from Zirtek.

Tablets are the most common choice for adults, while the oral solution is an alternative for anyone who prefers a liquid, with the age range and dose printed on the pack. Even the less drowsy types can make some people sleepy, so see how one affects you before driving or operating machinery, and avoid alcohol while taking it. Speak to our pharmacist before choosing for a child, or if you are pregnant, breastfeeding or take other medicines, and always read the label and the patient information leaflet before use. For other hay fever products, also see our hay fever relief range.

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Frequently Asked Questions

Will an antihistamine make me drowsy? +
Cetirizine, loratadine and fexofenadine are less likely to cause drowsiness, but a small number of people still feel sleepy after taking them. See how a new antihistamine affects you before driving or operating machinery, and avoid alcohol while you are taking it. If drowsiness is a concern for your work or daily routine, our pharmacist can help you compare the options.
What is the difference between cetirizine, loratadine and fexofenadine? +
For adults, all three are taken once a day and are less likely to cause drowsiness than older types. They are different active ingredients, and some people find that one suits them better than another. Zirtek contains cetirizine, Clarityn contains loratadine and Telfast contains fexofenadine. Children's doses can differ, so follow the pack, and ask our pharmacist if you are unsure which to try first.
Are there antihistamines in liquid form? +
Yes, Zirtek Allergy Oral Solution contains cetirizine, and some people find a liquid easier to take than a tablet. The age range and the dose for each age group are printed on the carton. Speak to our pharmacist before choosing any antihistamine for a child, and always read the label and the patient information leaflet before use.
Can I take an antihistamine with other medicines? +
Antihistamines can interact with some other medicines, and taking two antihistamines at the same time is not recommended unless a doctor has advised it. Tell our pharmacist about everything you take, including remedies bought without a prescription, and mention if you are pregnant, breastfeeding or have kidney or liver problems before you buy.