Non-ST segment elevation acute coronary syndrome

Active Ingredient: Clopidogrel

Indication for Clopidogrel

Population group: only adults (18 years old or older)
Therapeutic intent: Preventive action

Non-ST segment elevation acute coronary syndrome (unstable angina or non-Q-wave myocardial infarction), including patients undergoing a stent placement following percutaneous coronary intervention, in combination with acetylsalicylic acid (ASA).

For this indication, competent medicine agencies globally authorize below treatments:

300 mg or 600 mg loading dose and thereafter 75 mg once daily

For:

Dosage regimens

Regimen A

Oral, 300 milligrams clopidogrel, one dose, over the duration of 1 day. Afterwards, oral, 75 milligrams clopidogrel, once daily.

Regimen B

Oral, 600 milligrams clopidogrel, one dose, over the duration of 1 day. Afterwards, oral, 75 milligrams clopidogrel, once daily.

Detailed description

Non-ST segment elevation acute coronary syndrome (unstable angina or non-Q-wave myocardial infarction): clopidogrel treatment should be initiated with a single 300 mg or 600 mg loading dose. A 600 mg loading dose may be considered in patients <75 years of age when percutaneous coronary intervention is intended. Clopidogrel treatment should be continued at 75 mg once a day (with acetylsalicylic acid (ASA) 75 mg-325 mg daily). Since higher doses of ASA were associated with higher bleeding risk it is recommended that the dose of ASA should not be higher than 100 mg. The optimal duration of treatment has not been formally established. Clinical trial data support use up to 12 months, and the maximum benefit was seen at 3 months.

If a dose is missed:

  • Within less than 12 hours after regular scheduled time: patients should take the dose immediately and then take the next dose at the regular scheduled time.
  • For more than 12 hours: patients should take the next dose at the regular scheduled time and should not double the dose.

Active ingredient

Clopidogrel

Clopidogrel is a prodrug, one of whose metabolites is an inhibitor of platelet aggregation. Clopidogrel must be metabolised by CYP450 enzymes to produce the active metabolite that inhibits platelet aggregation.

Read more about Clopidogrel

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