 <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]  ulcers). If you notice any of the following unlikely but serious side effects, stop taking deferasirox and consult your doctor or pharmacist right away: stomach/abdominal pain that doesn't go away, black/bloody stools, vomit that looks like coffee grounds. Deferasirox may rarely cause serious (possibly fatal) liver disease. Get medical help right away if you have any symptoms of liver damage, including: nausea/vomiting that doesn't stop, loss of appetite, stomach/abdominal pain, yellowing of eyes/skin, dark urine. Deferasirox has rarely caused very serious (possibly fatal) kidney problems. Tell your doctor right away if you develop signs of kidney problems, such as: change in the amount of urine, frothy urine. Deferasirox can commonly cause a rash that is usually not serious. However, you may not be able to tell it apart from a rare rash that could be a sign of a severe reaction. Get medical help right away if you develop any rash. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially </s>