20740
After 5 days of clarithromycin 500 mg twice / day , amoxicillin 500 mg twice / day , and omeprazole 20 mg twice / day for treatment of the H . pylori infection , the patient experienced hypoglycemia and self - discontinued clarithromycin .
 clarithromycin, amoxicillin, omeprazole, clarithromycin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 clarithromycin, amoxicillin, omeprazole, clarithromycin