 <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] watch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.The precautions of Sulfadiazine Oral: Before taking sulfadiazine, tell your doctor or pharmacist if you are allergic to it; or to sulfa medications; 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: certain metabolic disorders (porphyria, G6PD deficiency), kidney disease, liver disease, severe allergies, asthma, diabetes, blood disorders (such as anemia due to folate vitamin deficiency), decreased bone marrow function (bone marrow suppression). Sulfadiazine may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using sulfadiazine before having any immunizations/vaccinations. 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 </s>