Cetirizine (Retanyx) 10mg FC Tablets are an antihistamine medication commonly used to relieve allergy symptoms such as runny nose, sneezing, itching, and watery eyes. It is also effective in treating hay fever, allergic rhinitis, and hives (urticaria). Each tablet contains 10mg of Cetirizine and comes in a pack of 100 tablets. It works by blocking the effects of histamine, a substance in the body that causes allergic reactions, providing relief without causing significant drowsiness.