Prevention of atherothrombotic events in patients suffering from MI, ischaemic stroke or established peripheral arterial disease; in patients suffering from acute coronary syndrome: Non-ST segment elevation acute coronary syndrome (unstable angina or non-Q-wave MI), in combination w/ acetylsalicylic acid; ST segment elevation acute MI, in combination w/ acetylsalicylic acid in medically treated patients eligible for thrombolytic therapy.