 <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]  occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. This medication may cause urine, sweat, saliva, or tears to change color (yellow, orange, red, or brown). This effect is harmless and will disappear when the medication is stopped. However, teeth and contact lens staining may be permanent. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: signs of kidney problems (such as change in the amount of urine), mental/mood changes (such as confusion, unusual behavior), unusual tiredness, easy bruising/bleeding, small red spots on the skin, joint pain/swelling, new or worsening shortness of breath. Get medical help right away if you have any very serious side effects, including: chest pain. Rifampin may rarely cause serious (possibly fatal) liver disease. Get medical help right away if you have any symptoms of liver damage, such as: nausea/vomiting that doesn't stop, loss of appetite, stomach/abdominal pain, yellowing eyes </s>