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The aims of this study were to examine vancomycin ( VCM ) - induced oxidative stress that promotes production of reactive oxygen species ( ROS ) and to investigate the role of erdosteine , an expectorant agent , which has also antioxidant properties , on kidney tissue against the possible VCM - induced renal impairment in rats .
 Chemical: vancomycin; Chemical: VCM; Chemical: oxygen; Chemical: erdosteine; Chemical: VCM; Disease: renal impairment
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: vancomycin; Chemical: VCM; Chemical: oxygen; Chemical: erdosteine; Chemical: VCM; Disease: renal impairment