Piriteze Antihistamine Allergy Relief Tablets Cetrizine 30 per packPiriteze Allergy Tablets treat symptoms of hay fever and other allergies including itchy or watery eyes, sneezing and itchy runny nose, and for allergies associated with pets, house dust mites and mould spore allergies. They can also be used to relieve the rashes and itching of hives. The active ingredient is cetirizine hydrochloride, an antihistamine which can help to relieve the symptoms of some allergies and itchy skin rashes. Piriteze Allergy