• diarrhoea, being sick (vomiting), stomach ache, feeling bloated, indigestion, constipation, weight loss • headache, dizziness, abnormal sense of taste, sleepiness, problems sleeping, abnormal sensations in the body such as pins and needles • rash, itching, muscle spasms, back pain, feeling weak, cough • increased levels of substances that measure the function of the liver and pancreas.