14929
Objective : To evaluate the potential of PEO as a sole polymer for the controlled release and to study the effect of formulation variables on release and gastric retention of highly soluble Diltiazem hydrochloride ( DTZ ) .
 Chemical: PEO; Chemical: Diltiazem hydrochloride; Chemical: DTZ
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: PEO; Chemical: Diltiazem hydrochloride; Chemical: DTZ