Implications of the Antiplatelet Therapy Gap Left With Discontinuation of Prasugrel in Canada
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Updated: Nov 1, 2025

Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
Marie Lordkipanidzé1,2, Guillaume Marquis-Gravel1,3, Jean-François Tanguay1,3
1Montreal Heart Institute, Montreal, Quebec, Canada.
Insights
The discontinuation of prasugrel in Canada necessitates a review of antiplatelet therapy guidelines. Clinicians must identify optimal P2Y12 receptor antagonist alternatives for acute coronary syndromes.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Current Canadian Cardiovascular Society guidelines favor ticagrelor or prasugrel over clopidogrel for acute coronary syndromes.
- Prasugrel (Effient) has recently been discontinued in Canada, impacting treatment options.
Purpose of the Study:
- To review clinical scenarios where prasugrel was optimal.
- To discuss alternative P2Y12 receptor antagonist strategies in the absence of prasugrel.
Main Methods:
- An evidence-based review by Canadian Cardiovascular Society guidelines committee members.
- Analysis of clinical scenarios and alternative therapy considerations.
Main Results:
- Identified specific clinical situations favoring prasugrel use.
- Summarized alternative therapy considerations, including de-escalation strategies.
Conclusions:
- Prasugrel discontinuation presents a clinical challenge for managing acute coronary syndromes.
- Key factors must be considered when selecting alternative P2Y12 receptor antagonists.
Background:
The current Canadian Cardiovascular Society antiplatelet therapy guidelines recommend the use of ticagrelor or prasugrel over clopidogrel as first-line platelet P2Y12 receptor antagonists for treatment of moderate- to high-risk acute coronary syndromes. Recently, Effient (prasugrel [Eli Lilly Canada Inc, Toronto, Canada]) was discontinued by its distributor in Canada.
Methods:
Five members of the Canadian Cardiovascular Society antiplatelet therapy 2018 guidelines committee undertook an independent, evidence-based review to outline patients for whom prasugrel should be the optimal P2Y12 agent and discuss alternative strategies to consider without prasugrel.
Results:
Several clinical scenarios where prasugrel should be indicated are identified and discussed. Considerations to be undertaken for alternative therapies are summarized, including a review of national and international guidelines for de-escalation of P2Y12 receptor antagonists.
Conclusions:
The discontinuation of prasugrel poses a challenge for clinicians. Clinicians must consider key factors in determining the best alternate therapy.
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