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In this study , we assessed the effects of clopidogrel and clarithromycin , known CYP2B6 and CYP3A inhibitors , respectively , on the enantioselective disposition of racemic sibutramine in conjunction with CYP2B6 polymorphisms in humans .
 Chemical: clopidogrel; Chemical: clarithromycin; Chemical: racemic sibutramine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: clopidogrel; Chemical: clarithromycin; Chemical: racemic sibutramine