29252
Of the metabolites identified in vivo , 5 - hydroxyomeprazole , 5 ' - O - desmethylomeprazole , omeprazole sulfone and carboxyomeprazole had an AUCm / AUCp >= 0 . 25 when either total or unbound concentrations were measured following a single 20 mg dose of omeprazole in a cocktail .
 5 - hydroxyomeprazole, 5 ' - O - desmethylomeprazole, omeprazole sulfone, carboxyomeprazole, omeprazole
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 5 - hydroxyomeprazole, 5 ' - O - desmethylomeprazole, omeprazole sulfone, carboxyomeprazole, omeprazole