30629
BACKGROUND : Co - administration of ibuprofen ( IBU ) and isosorbide dinitrate ( ISDN ) provides synergistic beneficial effects on dystrophic skeletal muscle .
 ibuprofen, IBU, isosorbide dinitrate, ISDN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ibuprofen, IBU, isosorbide dinitrate, ISDN