Stop taking the capsules and tell your doctor immediately − If you have an allergic reaction such as skin rash, swelling of the face, wheezing or difficulty breathing − If you have heart problems such as pain in the chest − If you have liver failure (symptoms may include nausea (feeling sick), diarrhoea, jaundice (your skin or the whites of your eyes look yellow)) − If you have blistering or peeling of the skin − If you have severe stomach pain or any sign of bleeding in the stomach or intestines, such as passing black or bloodstained bowel movements, or vomiting blood