 <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]  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, liver disease (including liver problems caused by nitrofurantoin in the past), a certain genetic condition (G-6-PD deficiency), lung disease, numbness/tingling of the arms/legs, vitamin B deficiency, mineral imbalance, blood disorders (such as anemia), diabetes, ongoing weakness due to long-term disease, certain eye disorders (such as optic neuritis). Older adults may be at a greater risk for side effects while using this drug, especially nerve, liver or lung problems. This medication may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using this medication before having any immunizations/vaccinations. During pregnancy, this medication should be used only when clearly needed. It must not be used if you are near the end of your pregnancy (38-42 weeks), or at the time of labor and delivery. Doing so may cause a certain blood disorder (hemolytic anemia) in your baby. Discuss the risks and benefits with </s>