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Pharmacokinetic drug interactions with clopidogrel: updated review and risk management in combination therapy

Authors Wang Z, Chen M, Zhu L, Yu L, Zeng S, Xiang M, Zhou Q

Received 6 January 2015

Accepted for publication 5 February 2015

Published 19 March 2015 Volume 2015:11 Pages 449—467

DOI https://doi.org/10.2147/TCRM.S80437

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Professor Deyun Wang

Zhi-Yu Wang,1 Meng Chen,1 Ling-Ling Zhu,2 Lu-Shan Yu,3 Su Zeng,3 Mei-Xiang Xiang,4 Quan Zhou1

1Department of Pharmacy, 2VIP Care Ward, Division of Nursing, the Second Affiliated Hospital, School of Medicine, 3Department of Pharmaceutical Analysis and Drug Metabolism, College of Pharmaceutical Sciences, 4Department of Cardiology, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, People’s Republic of China

Background: Coprescribing of clopidogrel and other drugs is common. Available reviews have addressed the drug–drug interactions (DDIs) when clopidogrel is as an object drug, or focused on combination use of clopidogrel and a special class of drugs. Clinicians may still be ignorant of those DDIs when clopidogrel is a precipitant drug, the factors determining the degree of DDIs, and corresponding risk management.
Methods: A literature search was performed using PubMed, MEDLINE, Web of Science, and the Cochrane Library to analyze the pharmacokinetic DDIs of clopidogrel and new P2Y12 receptor inhibitors.
Results: Clopidogrel affects the pharmacokinetics of cerivastatin, repaglinide, ferulic acid, sibutramine, efavirenz, and omeprazole. Low efficacy of clopidogrel is anticipated in the presence of omeprazole, esomeprazole, morphine, grapefruit juice, scutellarin, fluoxetine, azole antifungals, calcium channel blockers, sulfonylureas, and ritonavir. Augmented antiplatelet effects are anticipated when clopidogrel is coprescribed with aspirin, curcumin, cyclosporin,
St John’s wort, rifampicin, and angiotensin-converting enzyme inhibitors. The factors determining the degree of DDIs with clopidogrel include genetic status (eg, cytochrome P540 [CYP]2B6*6, CYP2C19 polymorphism, CYP3A5*3, CYP3A4*1G, and CYP1A2-163C>A), species differences, and dose strength. The DDI risk does not exhibit a class effect, eg, the effects of clopidogrel on cerivastatin versus other statins, the effects of proton pump inhibitors on clopidogrel (omeprazole, esomeprazole versus pantoprazole, rabeprazole), the effects of rifampicin on clopidogrel versus ticagrelor and prasugrel, and the effects of calcium channel blockers on clopidogrel (amlodipine versus P-glycoprotein-inhibiting calcium channel blockers). The mechanism of the DDIs with clopidogrel involves modulating CYP enzymes (eg, CYP2B6, CYP2C8, CYP2C19, and CYP3A4), paraoxonase-1, hepatic carboxylesterase 1, P-glycoprotein, and organic anion transporter family member 1B1.
Conclusion: Effective and safe clopidogrel combination therapy can be achieved by increasing the awareness of potential changes in efficacy and toxicity, rationally selecting alternatives, tailoring drug therapy based on genotype, checking the appropriateness of physician orders, and performing therapeutic monitoring.

Keywords: clopidogrel, drug–drug interactions, drug metabolism, drug transporter, genotype, pharmacokinetics, polypharmacy, pharmacogenetics, P2Y12 receptor inhibitors, risk management
 

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