18408
Combined therapy with clonazepam and tiagabine was synergistic against generalized tonic - clonic seizures but was additive against myoclonic seizures .
 Chemical: clonazepam; Chemical: tiagabine
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: clonazepam; Chemical: tiagabine