 <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] . 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 Fosrenol Oral: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Lanthanum may stop some medications from working well if you take them at the same time. Ask your pharmacist for details because you may need to separate the times you take lanthanum by at least 2 hours from the times you take the following medications, among others: mycophenolate, thyroid medications (such as levothyroxine), tetracycline antibiotics (such as doxycycline, tetracycline), drugs that interact with antacids. Other medications (such as quinolone antibiotics including ciprofloxacin/levofloxacin) may require different </s>