 <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]  report side effects to Health Canada at 1-866-234-2345.The precautions of Vandetanib Oral: See also Warning section. Before taking vandetanib, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, 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: kidney disease, high blood pressure, recent bleeding (including recently coughing up blood), blood vessel problems (such as an aneurysm or a tear/break in the aorta or other blood vessels), recent surgery/injury. This drug may cause blurred vision. Do not drive, use machinery, or do any activity that requires clear vision until you are sure you can perform such activities safely. This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Get medical help right away if you get sunburned or have skin blisters/redness. Follow these instructions while taking vandetanib and for 4 months after stopping </s>