1367
The nicotine lozenge and nicotine gum were equally well tolerated , despite increased nicotine exposure from the lozenge .
 nicotine, nicotine, nicotine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 nicotine, nicotine, nicotine