The cetirizine and Xyzal (levocetirizine) are among the most commonly used antihistamines for the treatment of allergic reactions. These medications effectively relieve allergic symptoms such as runny nose, sneezing, itching, and redness of the eyes. They can address a wide range of allergic reactions and provide a solution for many people struggling with allergy symptoms that complicate their daily lives. Cetirizine, which belongs to the second generation of antihistamines, is a popular choice due to having fewer side effects than first-generation antihistamines. Xyzal is an enantiomer of cetirizine, which also effectively reduces allergic symptoms. As both medications operate with a similar mechanism of action, many are curious about which is…