Wholesale Quality Choice Cetrizine Allergy Relief 10mg (Zrytec) Expires 7/12 Quality Choice Cetrizine 24 Hour Allergry Relief 10mg Tab (Zyrtec). Original prescription strength all day allergy. Cetirizine HCI, 10 mg antihistamine. For both indoor and outdoor allergies. 24 hour relief of sneezing, runny nose, itchy or watery eyes, itchy thoat or nose. Compare to the active ingredient in Zyrtec. 90 tablets packed 24 per case..