18407
Tiagabine , a presynaptic GABA reuptake inhibitor , was protective against generalized tonic - clonic seizures but only minimally protective against myoclonic seizures and enhanced myoclonic seizure susceptibility at high doses .
 Chemical: Tiagabine; Chemical: GABA
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: Tiagabine; Chemical: GABA