 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Olopatadine Nasal: Olopatadine is used to relieve symptoms of seasonal allergies that occur in the nose, such as runny/itchy/stuffy nose, sneezing, and post-nasal drip. This medication is an antihistamine. It works by blocking certain natural substances called histamines that are responsible for allergic symptoms.Do not use this medication in children younger than 2 years unless specifically directed by the doctor. To decrease the risk for serious side effects, carefully follow all of the doctor's dosage directions. Do not give other cough and cold medication that might contain the same or similar ingredients (see also Drug Interactions section). Ask your doctor or pharmacist about other ways to relieve cough and cold symptoms (such as saline nose drops/spray, using a humidifier or infant nasal suction bulb). How to use Olopatadine HCL Aerosol, Spray With Pump Read the Patient Information Leaflet provided by your pharmacist before you start using olopatadine and each time you get a refill. Follow the instructions </s>