Olopatadine is a medication primarily used to treat allergic conditions, such as allergic rhinitis and conjunctivitis. It works as an antihistamine, blocking the action of histamine, a substance in the body that causes allergy symptoms like sneezing, itching, and runny nose. Olopatadine is available in various forms, including eye drops and nasal sprays. In eye drop form, Olopatadine is effective in relieving symptoms like itchy and watery eyes caused by allergies. It is generally well-tolerated, with few side effects, making it a popular choice for individuals seeking relief from seasonal allergies. Always consult a healthcare professional before starting any new medication.