 <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]  the skin and lungs and may harm an unborn baby, women who are pregnant or who may become pregnant should not handle this medication or breathe the dust from the tablets.The side effects of Vemurafenib Oral: Hair loss, dry skin, headache, nausea, vomiting, diarrhea, swelling of ankles/feet/hands, or joint/muscle pain 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. Vemurafenib may cause other types of skin cancer (such as cutaneous squamous cell carcinoma and melanoma) that usually does not spread to other parts of the body. (See also Notes section.) Tell your doctor right away if you have any skin changes including: new wart, skin sore, change in size/color of a mole, skin bump that bleeds or does not heal. Rarely, vemurafenib may also cause or worsen other types of cancer (such as non-cutaneous squamous cell carcinomas of the head and neck; cancers with RAS mutations </s>