Introduction: The use of clopidogrel is associated with a large variability in the response to this drug, wherein the results of the numerous studies indicate that even one out of three patients can be placed in the category of non responder. Corresponding section headings: Among the many causes of modified pharmacodynamic effects of clopidogrel, special attention is addressed to the possible clopidogrel-statin interaction. Numerous studies have focused on this problem, but it still seems to be missing the right answer. Conclusion: This paper reviews some of the most important facts regarding concomitant use of clopidogrel and statins, and specific issues to be addressed for safe treatment of patients.