15647
Ezogabine exerts its therapeutic effect by enhancing transmembrane potassium channels ( KCNQ ion channels ) , which is a novel mechanism in comparison with other antiepileptics .
 Ezogabine, potassium
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Ezogabine, potassium