 <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]  medical conditions or are taking other drugs that may cause QT prolongation. Before using mifepristone, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death). Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using mifepristone safely. Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above). Mifepristone must not be used during pregnancy. It may cause a loss of pregnancy. If you become pregnant or think you may be pregnant, tell your doctor right away. (See also Warning section.) Since this drug can be absorbed through the skin and may harm an unborn baby, women who are pregnant or who may become pregnant should not handle this medication. This medication passes into breast milk </s>