Zyrtec is a brand name for the antihistamine medication cetirizine. It is widely used to treat allergy symptoms such as sneezing, runny nose, itchy or watery eyes, and nasal or throat irritation. Antihistamines operate by preventing the activity of histamine, a chemical in the body that causes allergic responses.
The Zyrtec logo is a stylized depiction of three overlapping leaves in green, red, and yellow. The colorful pieces represent common allergy symptoms, like itchy eyes, runny nose, and sneezing.
