Such reactions may appear in the form of anaphylaxis (characterised by rash, facial swelling, bronchial spasm or shock), or rash accompanied by other side effects such as fever, blistering, mouth sores, eye inflammation, facial swelling, general swelling, shortness of breath, muscle or joint aches, a reduction in white blood cells (granulocytopaenia), general feelings of illness or severe problems with liver or kidneys.