<p>severe allergic reactions: signs include sudden swelling of your lips, face, throat or tongue, a severe rash or other severe skin reactions, difficulty swallowing or breathing. This reaction may be life-threatening. diarrhoea that keeps getting worse or does not go away, or stools that contains blood or mucus-this may happen during or after treatment is stopped with this combination. If this happens do not take medicines that stop or slow bowel movement.</p>