1642
PROCEDURES : Cats were treated with levetiracetam ( 20 mg / kg [ 9 . 1 mg / lb ] , PO , q 8 h ) .
 Chemical: levetiracetam
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: levetiracetam