Adult & elderly 75 mg as single dose.
Non-ST segment elevation acute coronary syndrome (unstable angina or non-Q-wave MI) Initially 300 mg single loading dose & continue at 75 mg once daily (w/ ASA 75-325 mg daily).
ST segment elevation acute MI 75 mg single daily dose, initiated w/ 300 mg loading dose in combination w/ ASA w/ or w/o thrombolytics.
Elderly >75 yr Initiated w/o loading dose. Initiate combination therapy immediately after symptoms start & continue for at least 4 wk.