Some side effects may occur, including; dryness, itching or peeling of the skin, and fever chills, sore throat, body aches or flu-like symptoms. More severe side effects are; chest pain, black and bloody stools, shortness of breath, slurred speech, loss of balance and vision, coughing up blood or vomiting blood that looks like coffee grounds, swelling or rapid weight gain, urinating less than usual or not at all, jaundice or yellowing of the eyes and skin, headache and severe blistering, peeling of the skin and red rash, bruising, severe tingling, numbness, pain and muscle weakness.