3422
Although large - dose amiodarone is highly effective in the long - term treatment of VT or VF refractory to conventional antiarrhythmic drugs , it causes significant toxicity in approximately 50 % of patients .
 Chemical: amiodarone; Disease: VT; Disease: VF; Disease: toxicity
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: amiodarone; Disease: VT; Disease: VF; Disease: toxicity