XYZAL is a prescription antihistamine medication containing 5 mg of levocetirizine dihydrochloride per tablet. This pack contains 30 film-coated tablets and is manufactured by GSK for treating allergy symptoms. Levocetirizine dihydrochloride is the active ingredient in XYZAL tablets. Each film-coated tablet contains 5 mg of the medication. As this is a prescription medication, it should only be taken under the direction and supervision of a healthcare provider. The tablets come in a blister pack format for convenient storage and use.