Roy is a 53 year old man who attends the surgery as an emergency appointment with severe epigastric pain. He also mentions this radiates to his back and that he has been vomiting all night. There is no associated fever. He denies any change in his bowels or urinary symptoms.
A working diagnosis of Pancreatitis is made and he is admitted to hospital. Which one of his following medications is not a risk factor for Pancreatitis?