15541
Exposure to sibutramine was higher in subjects with the CYP2B6 * 6 / * 6 genotype , but no statistical difference was observed among the CYP2B6 genotypes .
 Chemical: 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: sibutramine