24670
Once - weekly exenatide , an extended - duration glucagon - like peptide - 1 ( GLP - 1 ) agonist , provides an option for patients to take a drug weekly , with pharmacotherapeutic effects that are superior to twice - daily exenatide and sitagliptin and comparable to insulin glargine .
 Chemical: sitagliptin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: sitagliptin