 <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] 45.The precautions of Wal-Zyr (Ketotifen) Ophthalmic (Eye): Before using ketotifen, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients (such as the preservative benzalkonium chloride in the multi-dose container), which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: eye problems (such as glaucoma). After you apply this drug, your vision may become temporarily blurred. Do not drive, use machinery, or do any activity that requires clear vision until you can do it safely. Do not use this medication in children younger than 3 years unless directed by the doctor. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.The interactions of Wal-Zyr (Ketotifen) Ophthalmic (Eye): Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not </s>