3808
Dose - dependent bradycardia induced by verapamil was potentiated by LNa , LCa , and HCa .
 bradycardia, verapamil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 bradycardia, verapamil