The most common side effects with Tyverb in combination with capecitabine (seen in more than 1 patient in 10) are diarrhoea (which may lead to dehydration), nausea (feeling sick), vomiting, rash, anorexia (loss of appetite), fatigue (tiredness), dyspepsia (indigestion), dry skin, stomatitis (inflammation of the lining of the mouth), constipation, abdominal (tummy) pain, palmar-plantar erythrodysaesthesia (redness and pain on the hands and feet), pain in the extremities (hands and feet), back pain, inflammation of the mucous membranes (moist body surfaces) and insomnia (difficulty sleeping).