− if you are taking tablets/ capsules used to ” thin” the blood, such as warfarin or coumarin (anti- coagulants); − if you have an inflamed pancreas (pancreatitis); − if you have recently had major surgery including surgery to your brain or spine; − if you have been given cardiopulmonary resuscitation (chest compressions) for more than 2 minutes duration, in the last two weeks.