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The synergistic actions of clonazepam and tiagabine gave enhanced seizure protection and reduced toxicity , suggesting that combination therapy may be well tolerated and effective for seizures in DS .
 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