1681
As penicillin derivatives and amoxicillin alone are known to induce such types of lesions , the amoxicillin component , with or without a potentiating effect of clavulanic acid , might have a major role .
 penicillin, amoxicillin, amoxicillin, clavulanic acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 penicillin, amoxicillin, amoxicillin, clavulanic acid