Like all medicines, this medicine can cause side effects, although not everybody gets them. Most people do not have any side effects while taking this medicine. However, if you experience any of the following side effects, or anything else unusual happens, stop taking the medicine immediately, and see your doctor immediately: • Serious skin reactions • Allergic reactions which may be severe such as skin rash, itching, swollen red areas of the skin, sometimes with shortness of breath or swelling of the mouth, lips, tongue, throat or face • Changes in your blood which may make you more prone to bleeding, bruising, fever and infections, such as sore throat and ulcers • Problems or pain passing urine • Increased pressure inside the eye (acute angle glaucoma) • Dilated pupils • Breathing problems, which are more likely if you have experienced them before when taking other painkillers such as acetylsalicylic acid or ibuprofen. • Raised blood pressure • A faster, slower o