 <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]  diarrhea may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. 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). Because belatacept works by weakening the immune system, it may lower your ability to fight infections. This may make you more likely to get a serious (rarely fatal) infection or make any infection you have worse. Tell your doctor promptly if you develop any signs of an infection such as cough, sore throat, fever, or chills. This drug increases the risk of a rare and possibly fatal brain infection (progressive multifocal leukoencephalopathy-PML). Tell your doctor right away if you develop symptoms such as: clumsiness, difficulty speaking, problems with balance, sudden change in your thinking (such as confusion, difficulty concentrating, memory loss), vision changes, weakness of the arms and legs that gets worse. The immune system is also important in preventing and controlling cancer. Very rarely, patients using bel </s>