1899
According to the Naranjo probability scale , flecainide was the probable cause of the patient ' s delirium ; the Horn Drug Interaction Probability Scale indicates a possible pharmacokinetic drug interaction between flecainide and paroxetine .
 Chemical: flecainide; Disease: delirium; Chemical: flecainide; Chemical: paroxetine
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: flecainide; Disease: delirium; Chemical: flecainide; Chemical: paroxetine