 <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]  ointment), wait at least 5 minutes before applying it. Apply eye drops before eye ointments to allow the eye drops to enter the eye. If your doctor has prescribed this medication, use it regularly in order to get the most benefit from it. To help you remember, use it at the same times each day. Continue to use this medication as prescribed until pollen season is over or you are no longer exposed to the allergic substance, even when allergic symptoms disappear or improve. If your condition lasts or gets worse, if you develop new symptoms, or if you think you have a serious medical problem, get medical help right away. If you are treating yourself with nonprescription ketotifen, consult your doctor if your itching worsens or lasts more than 72 hours. You may need a different medication.The side effects of Wal-Zyr (Ketotifen) Ophthalmic (Eye): Burning/stinging/irritation of the eye, headache, stuffy/runny nose, bad taste in your mouth, and increased sensitivity to light may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. If your doctor has directed you to use this medication, remember that your doctor has judged </s>