L-cet 0.5mg/ml syrup contains an active ingredient levocetirizine dihydrochloride, it is an antihistamine used to relieve allergy symptoms of allergic rhinitis such as watery eyes, runny nose, itching eyes/nose, and sneezing. It is also used to relieve symptoms of urticaria such as itching and hives and some skin reactions such as eczema, hives, and reactions to bites and stings. Levocetirizine works by blocking histamine that your body makes during an allergic reaction. L-Cet Syrup provides relief from symptoms such as blocked or runny nose, sneezing, and itchy or watery eyes. This will make it easier for you to go about your daily activities. It can also give relief from allergic reactions after insect bites and symptoms of hives and eczema such as rash, swelling, itching, and irritation.