 <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]  these effects last or get worse, tell your doctor or pharmacist promptly. To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute. 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: mental/mood changes (such as depression, anxiety, thoughts of suicide), tingling feeling in the skin, back/joint/muscle pain, signs of infection (such as sore throat that doesn't go away, fever), painful swallowing, peeling skin on palms/soles. Isotretinoin may rarely cause disease of the pancreas (pancreatitis) that may rarely be fatal. Stop taking this medication and tell your doctor right away if you develop: severe stomach pain, nausea/vomiting that is severe or doesn't stop. Stop taking this medication and tell your doctor right away if you have any very serious side effects, including: severe headache, vision changes, ringing in the ears, hearing loss, </s>