7182
4 . The repeated exposures of silymarin , compared to single administration of silymarin , increased oral bioavailability and affected the pharmacokinetics of risperidone and 9 - hydroxyrisperidone , by inhibiting P - gp .
 Chemical: risperidone; Chemical: 9 - hydroxyrisperidone
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: risperidone; Chemical: 9 - hydroxyrisperidone