Zyrtec 0.1% Oral Solution (75ml) is a medication used to relieve allergy symptoms such as sneezing, runny nose, itchy or watery eyes, and itching from hives or skin reactions. The active ingredient, cetirizine, is a second-generation antihistamine that works by blocking histamine, a substance in the body that triggers allergy symptoms. This oral solution comes in a 75ml bottle, and the 0.1% concentration means there are 0.1 grams of cetirizine per 100ml of the solution. It is commonly used for treating symptoms associated with hay fever (seasonal allergic rhinitis) and chronic urticaria (hives).The solution is usually taken once daily, and the dosage depends on the age of the patient, so it is important to follow the recommended guidelines or consult a doctor for proper dosage. The liquid form may be easier for some patients to swallow compared to tablets, making it suitable for children or individuals who have difficulty with pills.