FREE DELIVERY PLEASE NOTE THAT FREE DELIVERY ONLY APPLIES WHEN ITEM IS ORDERED ALONE OR ONLY WITH OTHER ITEMS MARKED SPECIFICALLY AS SUCH. You will not receive free delivery if this item is ordered with items not advertised as such. Any product listed as free delivery will be sent out via 2nd class post. If another method of postage is selected and the correct postage has not been paid, the order will be downgraded to a 1st/2nd class service. Cetirizine 10mg antihistamine tablets are an excellent treatment for people suffering from hay fever (seasonal allergic rhinitis), perennial allergic rhinitis (a similar condition to hay fever caused by allergies, that continues throughout the year) and urticaria (swelling, redness and itchiness of the skin). Branded versions include Zirtek and Piriteze. Product images shown are for illustration purposes only and may differ from actual product appearance. Please note that free delivery only applies when a product marked as such is ordered alone or with other free delivery products. Packaging may vary. Cetirizine Hydrochloride and Dihydrochloride are medically interchangeable and work exactly the same.